1154921506 has 16 divisors (see below), whose sum is σ = 1776162816. Its totient is φ = 562963456.

The previous prime is 1154921489. The next prime is 1154921533. The reversal of 1154921506 is 6051294511.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255 + ... + 48061.

It is an arithmetic number, because the mean of its divisors is an integer number (111010176).

Almost surely, 2^1154921506 is an apocalyptic number.

1154921506 is a deficient number, since it is larger than the sum of its proper divisors (621241310).

1154921506 is a wasteful number, since it uses less digits than its factorization.

1154921506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48113.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1154921506 is about 33984.1360931832. The cubic root of 1154921506 is about 1049.1819799557.

The spelling of 1154921506 in words is "one billion, one hundred fifty-four million, nine hundred twenty-one thousand, five hundred six".