1156004149 has 4 divisors (see below), whose sum is σ = 1156770720. Its totient is φ = 1155237580.

The previous prime is 1156004141. The next prime is 1156004231. The reversal of 1156004149 is 9414006511.

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 a cyclic number.

It is not a de Polignac number, because 1156004149 - 2³ = 1156004141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156004149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156004141) 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, 381019 + ... + 384040.

It is an arithmetic number, because the mean of its divisors is an integer number (289192680).

Almost surely, 2^1156004149 is an apocalyptic number.

It is an amenable number.

1156004149 is a deficient number, since it is larger than the sum of its proper divisors (766571).

1156004149 is an equidigital number, since it uses as much as digits as its factorization.

1156004149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766570.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1156004149 is about 34000.0610146511. The cubic root of 1156004149 is about 1049.5097178932.

The spelling of 1156004149 in words is "one billion, one hundred fifty-six million, four thousand, one hundred forty-nine".