1831669680 has 40 divisors (see below), whose sum is σ = 5678176752. Its totient is φ = 488445184.

The previous prime is 1831669669. The next prime is 1831669687. The reversal of 1831669680 is 869661381.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1831669687) 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, 3815739 + ... + 3816218.

Almost surely, 2^1831669680 is an apocalyptic number.

1831669680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1831669680 is an abundant number, since it is smaller than the sum of its proper divisors (3846507072).

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

1831669680 is a wasteful number, since it uses less digits than its factorization.

1831669680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631973 (or 7631967 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1831669680 is about 42798.0102341219. The cubic root of 1831669680 is about 1223.5330890328.

The spelling of 1831669680 in words is "one billion, eight hundred thirty-one million, six hundred sixty-nine thousand, six hundred eighty".