1275493964 has 6 divisors (see below), whose sum is σ = 2232114444. Its totient is φ = 637746980.

The previous prime is 1275493963. The next prime is 1275493987. The reversal of 1275493964 is 4693945721.

It is not an unprimeable number, because it can be changed into a prime (1275493963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159436742 + ... + 159436749.

It is an arithmetic number, because the mean of its divisors is an integer number (372019074).

Almost surely, 2^1275493964 is an apocalyptic number.

It is an amenable number.

1275493964 is a deficient number, since it is larger than the sum of its proper divisors (956620480).

1275493964 is a wasteful number, since it uses less digits than its factorization.

1275493964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318873495 (or 318873493 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 1275493964 is about 35714.0583524191. The cubic root of 1275493964 is about 1084.4914586824.

The spelling of 1275493964 in words is "one billion, two hundred seventy-five million, four hundred ninety-three thousand, nine hundred sixty-four".