1153531850939 has 32 divisors (see below), whose sum is σ = 1355726131200. Its totient is φ = 971951633280.

The previous prime is 1153531850927. The next prime is 1153531850941. The reversal of 1153531850939 is 9390581353511.

It is a happy number.

It is not a de Polignac number, because 1153531850939 - 2²⁰ = 1153530802363 is a prime.

It is a super-2 number, since 2×1153531850939² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153531850959) 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, 1424522 + ... + 2082384.

It is an arithmetic number, because the mean of its divisors is an integer number (42366441600).

Almost surely, 2^{1153531850939} is an apocalyptic number.

1153531850939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1153531850939 is a deficient number, since it is larger than the sum of its proper divisors (202194280261).

1153531850939 is a wasteful number, since it uses less digits than its factorization.

1153531850939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658155.

The product of its (nonzero) digits is 2187000, while the sum is 53.

The spelling of 1153531850939 in words is "one trillion, one hundred fifty-three billion, five hundred thirty-one million, eight hundred fifty thousand, nine hundred thirty-nine".