1672312538 has 16 divisors (see below), whose sum is σ = 2725339176. Its totient is φ = 765004800.

The previous prime is 1672312529. The next prime is 1672312547. The reversal of 1672312538 is 8352132761.

It is an interprime number because it is at equal distance from previous prime (1672312529) and next prime (1672312547).

It can be written as a sum of positive squares in 4 ways, for example, as 516516529 + 1155796009 = 22727^2 + 33997^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281663 + ... + 287538.

Almost surely, 2^1672312538 is an apocalyptic number.

1672312538 is a deficient number, since it is larger than the sum of its proper divisors (1053026638).

1672312538 is a wasteful number, since it uses less digits than its factorization.

1672312538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569329.

The product of its digits is 60480, while the sum is 38.

The square root of 1672312538 is about 40893.9181052635. The cubic root of 1672312538 is about 1186.9683767443.

The spelling of 1672312538 in words is "one billion, six hundred seventy-two million, three hundred twelve thousand, five hundred thirty-eight".