1631382216 has 32 divisors (see below), whose sum is σ = 4099170240. Its totient is φ = 541032128.

The previous prime is 1631382209. The next prime is 1631382217. The reversal of 1631382216 is 6122831361.

It is a super-2 number, since 2×1631382216² = 5322815869362141312, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1631382217) 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, 167796 + ... + 177251.

It is an arithmetic number, because the mean of its divisors is an integer number (128099070).

Almost surely, 2^1631382216 is an apocalyptic number.

It is an amenable number.

1631382216 is an abundant number, since it is smaller than the sum of its proper divisors (2467788024).

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

1631382216 is a wasteful number, since it uses less digits than its factorization.

1631382216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345253 (or 345249 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 1631382216 is about 40390.3728133326. The cubic root of 1631382216 is about 1177.2044846017.

The spelling of 1631382216 in words is "one billion, six hundred thirty-one million, three hundred eighty-two thousand, two hundred sixteen".