1268445970 has 32 divisors (see below), whose sum is σ = 2494722240. Its totient is φ = 460520640.

The previous prime is 1268445967. The next prime is 1268445977. The reversal of 1268445970 is 795448621.

It is a self number, because there is not a number n which added to its sum of digits gives 1268445970.

It is not an unprimeable number, because it can be changed into a prime (1268445977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63001 + ... + 80659.

It is an arithmetic number, because the mean of its divisors is an integer number (77960070).

Almost surely, 2^1268445970 is an apocalyptic number.

1268445970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268445970 is a deficient number, since it is larger than the sum of its proper divisors (1226276270).

1268445970 is a wasteful number, since it uses less digits than its factorization.

1268445970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18330.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 1268445970 is about 35615.2491216894. The cubic root of 1268445970 is about 1082.4902441397.

The spelling of 1268445970 in words is "one billion, two hundred sixty-eight million, four hundred forty-five thousand, nine hundred seventy".