1155351540 has 96 divisors (see below), whose sum is σ = 3701585664. Its totient is φ = 263761920.

The previous prime is 1155351517. The next prime is 1155351541. The reversal of 1155351540 is 451535511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1155351498 and 1155351507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155351541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679972 + ... + 681668.

It is an arithmetic number, because the mean of its divisors is an integer number (38558184).

Almost surely, 2^1155351540 is an apocalyptic number.

1155351540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155351540 is an abundant number, since it is smaller than the sum of its proper divisors (2546234124).

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

1155351540 is a wasteful number, since it uses less digits than its factorization.

1155351540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337 (or 3335 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1155351540 is about 33990.4624858209. The cubic root of 1155351540 is about 1049.3121844569.

The spelling of 1155351540 in words is "one billion, one hundred fifty-five million, three hundred fifty-one thousand, five hundred forty".