1213745960 has 64 divisors (see below), whose sum is σ = 3197214720. Its totient is φ = 405987840.

The previous prime is 1213745941. The next prime is 1213745963. The reversal of 1213745960 is 695473121.

It is not an unprimeable number, because it can be changed into a prime (1213745963) 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 15 ways as a sum of consecutive naturals, for example, 41384 + ... + 64343.

It is an arithmetic number, because the mean of its divisors is an integer number (49956480).

Almost surely, 2^1213745960 is an apocalyptic number.

1213745960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213745960 is an abundant number, since it is smaller than the sum of its proper divisors (1983468760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213745960 is a wasteful number, since it uses less digits than its factorization.

1213745960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105786 (or 105782 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1213745960 is about 34838.8570421017. The cubic root of 1213745960 is about 1066.7007467410.

The spelling of 1213745960 in words is "one billion, two hundred thirteen million, seven hundred forty-five thousand, nine hundred sixty".