1201151400 has 48 divisors (see below), whose sum is σ = 3723571200. Its totient is φ = 320306880.

The previous prime is 1201151359. The next prime is 1201151407. The reversal of 1201151400 is 41511021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201151400.

It is not an unprimeable number, because it can be changed into a prime (1201151407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000360 + ... + 1001559.

It is an arithmetic number, because the mean of its divisors is an integer number (77574400).

Almost surely, 2^1201151400 is an apocalyptic number.

1201151400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201151400 is an abundant number, since it is smaller than the sum of its proper divisors (2522419800).

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

1201151400 is a wasteful number, since it uses less digits than its factorization.

1201151400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001938 (or 2001929 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1201151400 is about 34657.6311942983. The cubic root of 1201151400 is about 1062.9983341700.

Adding to 1201151400 its reverse (41511021), we get a palindrome (1242662421).

The spelling of 1201151400 in words is "one billion, two hundred one million, one hundred fifty-one thousand, four hundred".