1154928819 has 16 divisors (see below), whose sum is σ = 1687440384. Its totient is φ = 696813600.

The previous prime is 1154928763. The next prime is 1154928821. The reversal of 1154928819 is 9188294511.

It is a happy number.

It is not a de Polignac number, because 1154928819 - 2⁸ = 1154928563 is a prime.

It is a super-2 number, since 2×1154928819² = 2667721153913469522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1154928829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71112 + ... + 85829.

It is an arithmetic number, because the mean of its divisors is an integer number (105465024).

Almost surely, 2^1154928819 is an apocalyptic number.

1154928819 is a deficient number, since it is larger than the sum of its proper divisors (532511565).

1154928819 is a wasteful number, since it uses less digits than its factorization.

1154928819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157178.

The product of its digits is 207360, while the sum is 48.

The square root of 1154928819 is about 33984.2436873325. The cubic root of 1154928819 is about 1049.1841944357.

The spelling of 1154928819 in words is "one billion, one hundred fifty-four million, nine hundred twenty-eight thousand, eight hundred nineteen".