1349971872 has 24 divisors (see below), whose sum is σ = 3543676416. Its totient is φ = 449990592.

The previous prime is 1349971859. The next prime is 1349971877. The reversal of 1349971872 is 2781799431.

1349971872 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1349971877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7031008 + ... + 7031199.

It is an arithmetic number, because the mean of its divisors is an integer number (147653184).

Almost surely, 2^1349971872 is an apocalyptic number.

1349971872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1349971872 is an abundant number, since it is smaller than the sum of its proper divisors (2193704544).

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

1349971872 is a wasteful number, since it uses less digits than its factorization.

1349971872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14062220 (or 14062212 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 1349971872 is about 36741.9633661567. The cubic root of 1349971872 is about 1105.2017736545.

The spelling of 1349971872 in words is "one billion, three hundred forty-nine million, nine hundred seventy-one thousand, eight hundred seventy-two".