1631506460 has 24 divisors (see below), whose sum is σ = 3429016416. Its totient is φ = 652059200.

The previous prime is 1631506451. The next prime is 1631506463. The reversal of 1631506460 is 646051361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631506463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8891 + ... + 57810.

It is an arithmetic number, because the mean of its divisors is an integer number (142875684).

Almost surely, 2^1631506460 is an apocalyptic number.

1631506460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1631506460 is an abundant number, since it is smaller than the sum of its proper divisors (1797509956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631506460 is a wasteful number, since it uses less digits than its factorization.

1631506460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67933 (or 67931 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1631506460 is about 40391.9108238271. The cubic root of 1631506460 is about 1177.2343686431.

The spelling of 1631506460 in words is "one billion, six hundred thirty-one million, five hundred six thousand, four hundred sixty".