1372772461 has 2 divisors, whose sum is σ = 1372772462. Its totient is φ = 1372772460.

The previous prime is 1372772437. The next prime is 1372772501. The reversal of 1372772461 is 1642772731.

It is an a-pointer prime, because the next prime (1372772501) can be obtained adding 1372772461 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723287236 + 649485225 = 26894^2 + 25485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372772461 - 2¹⁹ = 1372248173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372772431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686386230 + 686386231.

It is an arithmetic number, because the mean of its divisors is an integer number (686386231).

Almost surely, 2^1372772461 is an apocalyptic number.

It is an amenable number.

1372772461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372772461 is an equidigital number, since it uses as much as digits as its factorization.

1372772461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 40.

The square root of 1372772461 is about 37050.9441310205. The cubic root of 1372772461 is about 1111.3892355870.

The spelling of 1372772461 in words is "one billion, three hundred seventy-two million, seven hundred seventy-two thousand, four hundred sixty-one".