1372920481 has 2 divisors, whose sum is σ = 1372920482. Its totient is φ = 1372920480.

The previous prime is 1372920463. The next prime is 1372920551. The reversal of 1372920481 is 1840292731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697752225 + 675168256 = 26415^2 + 25984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372920481 - 2⁹ = 1372919969 is a prime.

It is a super-2 number, since 2×1372920481² = 3769821294298542722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1372920481.

It is not a weakly prime, because it can be changed into another prime (1372920781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686460240 + 686460241.

It is an arithmetic number, because the mean of its divisors is an integer number (686460241).

Almost surely, 2^1372920481 is an apocalyptic number.

It is an amenable number.

1372920481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372920481 is an equidigital number, since it uses as much as digits as its factorization.

1372920481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1372920481 is about 37052.9415971256. The cubic root of 1372920481 is about 1111.4291795513.

The spelling of 1372920481 in words is "one billion, three hundred seventy-two million, nine hundred twenty thousand, four hundred eighty-one".