1691413325 has 48 divisors (see below), whose sum is σ = 2449259904. Its totient is φ = 1134777600.

The previous prime is 1691413291. The next prime is 1691413331. The reversal of 1691413325 is 5233141961.

It is not a de Polignac number, because 1691413325 - 2¹⁰ = 1691412301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2121827 + ... + 2122623.

It is an arithmetic number, because the mean of its divisors is an integer number (51026248).

Almost surely, 2^1691413325 is an apocalyptic number.

It is an amenable number.

1691413325 is a deficient number, since it is larger than the sum of its proper divisors (757846579).

1691413325 is a wasteful number, since it uses less digits than its factorization.

1691413325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1057 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 1691413325 is about 41126.7957054765. The cubic root of 1691413325 is about 1191.4703771976.

The spelling of 1691413325 in words is "one billion, six hundred ninety-one million, four hundred thirteen thousand, three hundred twenty-five".