1975452291 has 12 divisors (see below), whose sum is σ = 2866004232. Its totient is φ = 1311165216.

The previous prime is 1975452251. The next prime is 1975452299. The reversal of 1975452291 is 1922545791.

1975452291 is a `hidden beast` number, since 19 + 7 + 545 + 2 + 2 + 91 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1975452291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1975452299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481426 + ... + 485511.

It is an arithmetic number, because the mean of its divisors is an integer number (238833686).

Almost surely, 2^1975452291 is an apocalyptic number.

1975452291 is a deficient number, since it is larger than the sum of its proper divisors (890551941).

1975452291 is a wasteful number, since it uses less digits than its factorization.

1975452291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967170 (or 967167 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 1975452291 is about 44446.0604665925. The cubic root of 1975452291 is about 1254.7451196917.

The spelling of 1975452291 in words is "one billion, nine hundred seventy-five million, four hundred fifty-two thousand, two hundred ninety-one".