1147023775 has 12 divisors (see below), whose sum is σ = 1423560424. Its totient is φ = 916812000.

The previous prime is 1147023769. The next prime is 1147023799. The reversal of 1147023775 is 5773207411.

It is a happy number.

It is not a de Polignac number, because 1147023775 - 2⁵ = 1147023743 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9685 + ... + 48865.

Almost surely, 2^1147023775 is an apocalyptic number.

1147023775 is a deficient number, since it is larger than the sum of its proper divisors (276536649).

1147023775 is a wasteful number, since it uses less digits than its factorization.

1147023775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40362 (or 40357 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 1147023775 is about 33867.7394433109. The cubic root of 1147023775 is about 1046.7849579050.

It can be divided in two parts, 11470 and 23775, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 1147023775 in words is "one billion, one hundred forty-seven million, twenty-three thousand, seven hundred seventy-five".