1155020370 has 128 divisors (see below), whose sum is σ = 3250630656. Its totient is φ = 257216256.

The previous prime is 1155020329. The next prime is 1155020411. The reversal of 1155020370 is 730205511.

It is an interprime number because it is at equal distance from previous prime (1155020329) and next prime (1155020411).

It is a super-2 number, since 2×1155020370² = 2668144110229873800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155020370.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1448812 + ... + 1449608.

It is an arithmetic number, because the mean of its divisors is an integer number (25395552).

Almost surely, 2^1155020370 is an apocalyptic number.

1155020370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155020370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625315328).

1155020370 is an abundant number, since it is smaller than the sum of its proper divisors (2095610286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155020370 is a wasteful number, since it uses less digits than its factorization.

1155020370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 1155020370 is about 33985.5906230861. The cubic root of 1155020370 is about 1049.2119165840.

Adding to 1155020370 its reverse (730205511), we get a palindrome (1885225881).

The spelling of 1155020370 in words is "one billion, one hundred fifty-five million, twenty thousand, three hundred seventy".