1377192997 has 2 divisors, whose sum is σ = 1377192998. Its totient is φ = 1377192996.

The previous prime is 1377192959. The next prime is 1377193007. The reversal of 1377192997 is 7992917731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 924099201 + 453093796 = 30399^2 + 21286^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377192997 - 2¹⁵ = 1377160229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377192917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688596498 + 688596499.

It is an arithmetic number, because the mean of its divisors is an integer number (688596499).

Almost surely, 2^1377192997 is an apocalyptic number.

It is an amenable number.

1377192997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377192997 is an equidigital number, since it uses as much as digits as its factorization.

1377192997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500282, while the sum is 55.

The square root of 1377192997 is about 37110.5510198919. The cubic root of 1377192997 is about 1112.5809048093.

The spelling of 1377192997 in words is "one billion, three hundred seventy-seven million, one hundred ninety-two thousand, nine hundred ninety-seven".