1597168406 has 4 divisors (see below), whose sum is σ = 2395752612. Its totient is φ = 798584202.

The previous prime is 1597168361. The next prime is 1597168423. The reversal of 1597168406 is 6048617951.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399292100 + ... + 399292103.

It is an arithmetic number, because the mean of its divisors is an integer number (598938153).

Almost surely, 2^1597168406 is an apocalyptic number.

1597168406 is a deficient number, since it is larger than the sum of its proper divisors (798584206).

1597168406 is an equidigital number, since it uses as much as digits as its factorization.

1597168406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798584205.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1597168406 is about 39964.5894011186. The cubic root of 1597168406 is about 1168.9167186040.

The spelling of 1597168406 in words is "one billion, five hundred ninety-seven million, one hundred sixty-eight thousand, four hundred six".