1372971893 has 2 divisors, whose sum is σ = 1372971894. Its totient is φ = 1372971892.

The previous prime is 1372971883. The next prime is 1372971947. The reversal of 1372971893 is 3981792731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821567569 + 551404324 = 28663^2 + 23482^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372971893 - 2⁴ = 1372971877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372971823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686485946 + 686485947.

It is an arithmetic number, because the mean of its divisors is an integer number (686485947).

Almost surely, 2^1372971893 is an apocalyptic number.

It is an amenable number.

1372971893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372971893 is an equidigital number, since it uses as much as digits as its factorization.

1372971893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 1372971893 is about 37053.6353547125. The cubic root of 1372971893 is about 1111.4430526742.

The spelling of 1372971893 in words is "one billion, three hundred seventy-two million, nine hundred seventy-one thousand, eight hundred ninety-three".