1372666538 has 16 divisors (see below), whose sum is σ = 2066064000. Its totient is φ = 683983872.

The previous prime is 1372666531. The next prime is 1372666573. The reversal of 1372666538 is 8356662731.

It is a junction number, because it is equal to n+sod(n) for n = 1372666492 and 1372666501.

It is not an unprimeable number, because it can be changed into a prime (1372666531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320623 + ... + 1321661.

It is an arithmetic number, because the mean of its divisors is an integer number (129129000).

Almost surely, 2^1372666538 is an apocalyptic number.

1372666538 is a deficient number, since it is larger than the sum of its proper divisors (693397462).

1372666538 is a wasteful number, since it uses less digits than its factorization.

1372666538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669.

The product of its digits is 1088640, while the sum is 47.

The square root of 1372666538 is about 37049.5146796824. The cubic root of 1372666538 is about 1111.3606499539.

The spelling of 1372666538 in words is "one billion, three hundred seventy-two million, six hundred sixty-six thousand, five hundred thirty-eight".