1378496507 has 2 divisors, whose sum is σ = 1378496508. Its totient is φ = 1378496506.

The previous prime is 1378496503. The next prime is 1378496519. The reversal of 1378496507 is 7056948731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378496507 - 2² = 1378496503 is a prime.

It is a super-2 number, since 2×1378496507² = 3800505239622402098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1378496501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689248253 + 689248254.

It is an arithmetic number, because the mean of its divisors is an integer number (689248254).

Almost surely, 2^1378496507 is an apocalyptic number.

1378496507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378496507 is an equidigital number, since it uses as much as digits as its factorization.

1378496507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1378496507 is about 37128.1093916725. The cubic root of 1378496507 is about 1112.9318125428.

The spelling of 1378496507 in words is "one billion, three hundred seventy-eight million, four hundred ninety-six thousand, five hundred seven".