1597905253 has 4 divisors (see below), whose sum is σ = 1826177440. Its totient is φ = 1369633068.

The previous prime is 1597905223. The next prime is 1597905277. The reversal of 1597905253 is 3525097951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1597905253 - 2⁹ = 1597904741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597905203) 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, 114136083 + ... + 114136096.

It is an arithmetic number, because the mean of its divisors is an integer number (456544360).

Almost surely, 2^1597905253 is an apocalyptic number.

It is an amenable number.

1597905253 is a deficient number, since it is larger than the sum of its proper divisors (228272187).

1597905253 is an equidigital number, since it uses as much as digits as its factorization.

1597905253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228272186.

The product of its (nonzero) digits is 425250, while the sum is 46.

The square root of 1597905253 is about 39973.8070866411. The cubic root of 1597905253 is about 1169.0964492560.

The spelling of 1597905253 in words is "one billion, five hundred ninety-seven million, nine hundred five thousand, two hundred fifty-three".