1250690864 has 20 divisors (see below), whose sum is σ = 2440651080. Its totient is φ = 620845440.

The previous prime is 1250690863. The next prime is 1250690887. The reversal of 1250690864 is 4680960521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1250690863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278957 + ... + 283404.

It is an arithmetic number, because the mean of its divisors is an integer number (122032554).

Almost surely, 2^1250690864 is an apocalyptic number.

It is an amenable number.

1250690864 is a deficient number, since it is larger than the sum of its proper divisors (1189960216).

1250690864 is a wasteful number, since it uses less digits than its factorization.

1250690864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562508 (or 562502 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1250690864 is about 35365.1080020972. The cubic root of 1250690864 is about 1077.4157646479.

The spelling of 1250690864 in words is "one billion, two hundred fifty million, six hundred ninety thousand, eight hundred sixty-four".