1397548507 has 4 divisors (see below), whose sum is σ = 1410609816. Its totient is φ = 1384487200.

The previous prime is 1397548499. The next prime is 1397548561. The reversal of 1397548507 is 7058457931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7058457931 = 7 ⋅1008351133.

It is a cyclic number.

It is not a de Polignac number, because 1397548507 - 2³ = 1397548499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397548007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6530494 + ... + 6530707.

It is an arithmetic number, because the mean of its divisors is an integer number (352652454).

Almost surely, 2^1397548507 is an apocalyptic number.

1397548507 is a deficient number, since it is larger than the sum of its proper divisors (13061309).

1397548507 is a wasteful number, since it uses less digits than its factorization.

1397548507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13061308.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 1397548507 is about 37383.8000609890. The cubic root of 1397548507 is about 1118.0355943643.

The spelling of 1397548507 in words is "one billion, three hundred ninety-seven million, five hundred forty-eight thousand, five hundred seven".