1604773431 has 16 divisors (see below), whose sum is σ = 2391191520. Its totient is φ = 1063661760.

The previous prime is 1604773409. The next prime is 1604773433. The reversal of 1604773431 is 1343774061.

1604773431 is a `hidden beast` number, since 1 + 604 + 7 + 7 + 3 + 43 + 1 = 666.

It is not a de Polignac number, because 1604773431 - 2⁶ = 1604773367 is a prime.

It is a super-2 number, since 2×1604773431² = 5150595529687023522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604773433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167110 + ... + 176451.

It is an arithmetic number, because the mean of its divisors is an integer number (149449470).

Almost surely, 2^1604773431 is an apocalyptic number.

1604773431 is a deficient number, since it is larger than the sum of its proper divisors (786418089).

1604773431 is a wasteful number, since it uses less digits than its factorization.

1604773431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343743 (or 343737 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 1604773431 is about 40059.6234505518. The cubic root of 1604773431 is about 1170.7690735799.

The spelling of 1604773431 in words is "one billion, six hundred four million, seven hundred seventy-three thousand, four hundred thirty-one".