1156423550 has 12 divisors (see below), whose sum is σ = 2150947896. Its totient is φ = 462569400.

The previous prime is 1156423531. The next prime is 1156423561. The reversal of 1156423550 is 553246511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11564186 + ... + 11564285.

It is an arithmetic number, because the mean of its divisors is an integer number (179245658).

Almost surely, 2^1156423550 is an apocalyptic number.

1156423550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1156423550 is a deficient number, since it is larger than the sum of its proper divisors (994524346).

1156423550 is a wasteful number, since it uses less digits than its factorization.

1156423550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23128483 (or 23128478 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1156423550 is about 34006.2281060396. The cubic root of 1156423550 is about 1049.6366240712.

The spelling of 1156423550 in words is "one billion, one hundred fifty-six million, four hundred twenty-three thousand, five hundred fifty".