1672989312 has 64 divisors (see below), whose sum is σ = 4705300800. Its totient is φ = 524857344.

The previous prime is 1672989293. The next prime is 1672989313. The reversal of 1672989312 is 2139892761.

It is a tau number, because it is divible by the number of its divisors (64).

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 (1672989313) 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, 121612 + ... + 134667.

It is an arithmetic number, because the mean of its divisors is an integer number (73520325).

Almost surely, 2^1672989312 is an apocalyptic number.

1672989312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1672989312 is an abundant number, since it is smaller than the sum of its proper divisors (3032311488).

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

1672989312 is a wasteful number, since it uses less digits than its factorization.

1672989312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256313 (or 256301 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 1672989312 is about 40902.1920194994. The cubic root of 1672989312 is about 1187.1284746083.

The spelling of 1672989312 in words is "one billion, six hundred seventy-two million, nine hundred eighty-nine thousand, three hundred twelve".