1670400372 has 24 divisors (see below), whose sum is σ = 4002942496. Its totient is φ = 541751328.

The previous prime is 1670400367. The next prime is 1670400379. The reversal of 1670400372 is 2730040761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670400379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880638 + ... + 1881525.

Almost surely, 2^1670400372 is an apocalyptic number.

1670400372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1670400372 is an abundant number, since it is smaller than the sum of its proper divisors (2332542124).

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

1670400372 is a wasteful number, since it uses less digits than its factorization.

1670400372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762207 (or 3762205 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 1670400372 is about 40870.5318291798. The cubic root of 1670400372 is about 1186.5158006174.

The spelling of 1670400372 in words is "one billion, six hundred seventy million, four hundred thousand, three hundred seventy-two".