1154087813 has 8 divisors (see below), whose sum is σ = 1204865088. Its totient is φ = 1103360544.

The previous prime is 1154087807. The next prime is 1154087821. The reversal of 1154087813 is 3187804511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1154087813 - 2¹⁰ = 1154086789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154087833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39281 + ... + 62057.

It is an arithmetic number, because the mean of its divisors is an integer number (150608136).

Almost surely, 2^1154087813 is an apocalyptic number.

It is an amenable number.

1154087813 is a deficient number, since it is larger than the sum of its proper divisors (50777275).

1154087813 is a wasteful number, since it uses less digits than its factorization.

1154087813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25003.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1154087813 is about 33971.8679645380. The cubic root of 1154087813 is about 1048.9294646053.

The spelling of 1154087813 in words is "one billion, one hundred fifty-four million, eighty-seven thousand, eight hundred thirteen".