1631940304 has 10 divisors (see below), whose sum is σ = 3161884370. Its totient is φ = 815970144.

The previous prime is 1631940281. The next prime is 1631940307. The reversal of 1631940304 is 4030491361.

It can be written as a sum of positive squares in only one way, i.e., 1611219600 + 20720704 = 40140^2 + 4552^2 .

It is a super-2 number, since 2×1631940304² = 5326458311639224832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631940307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50998119 + ... + 50998150.

It is an arithmetic number, because the mean of its divisors is an integer number (316188437).

Almost surely, 2^1631940304 is an apocalyptic number.

It is an amenable number.

1631940304 is a deficient number, since it is larger than the sum of its proper divisors (1529944066).

1631940304 is a wasteful number, since it uses less digits than its factorization.

1631940304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101996277 (or 101996271 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1631940304 is about 40397.2808985951. The cubic root of 1631940304 is about 1177.3387079589.

The spelling of 1631940304 in words is "one billion, six hundred thirty-one million, nine hundred forty thousand, three hundred four".