1151555313 has 4 divisors (see below), whose sum is σ = 1535407088. Its totient is φ = 767703540.

The previous prime is 1151555311. The next prime is 1151555381. The reversal of 1151555313 is 3135551511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1151555313 - 2¹ = 1151555311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151555311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191925883 + ... + 191925888.

It is an arithmetic number, because the mean of its divisors is an integer number (383851772).

Almost surely, 2^1151555313 is an apocalyptic number.

It is an amenable number.

1151555313 is a deficient number, since it is larger than the sum of its proper divisors (383851775).

1151555313 is an equidigital number, since it uses as much as digits as its factorization.

1151555313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383851774.

The product of its digits is 5625, while the sum is 30.

The square root of 1151555313 is about 33934.5740064613. The cubic root of 1151555313 is about 1048.1616549503.

The spelling of 1151555313 in words is "one billion, one hundred fifty-one million, five hundred fifty-five thousand, three hundred thirteen".