1375207812 has 72 divisors (see below), whose sum is σ = 3957145920. Its totient is φ = 398608320.

The previous prime is 1375207807. The next prime is 1375207817. The reversal of 1375207812 is 2187025731.

1375207812 is a `hidden beast` number, since 1 + 375 + 207 + 81 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1375207807) and next prime (1375207817).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1375207817) 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 23 ways as a sum of consecutive naturals, for example, 66387 + ... + 84602.

It is an arithmetic number, because the mean of its divisors is an integer number (54960360).

Almost surely, 2^1375207812 is an apocalyptic number.

1375207812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1375207812 is an abundant number, since it is smaller than the sum of its proper divisors (2581938108).

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

1375207812 is a wasteful number, since it uses less digits than its factorization.

1375207812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151033 (or 151028 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1375207812 is about 37083.7944660468. The cubic root of 1375207812 is about 1112.0460630385.

The spelling of 1375207812 in words is "one billion, three hundred seventy-five million, two hundred seven thousand, eight hundred twelve".