1673520912 has 450 divisors, whose sum is σ = 6028074558. Its totient is φ = 446777856.

The previous prime is 1673520881. The next prime is 1673520943. The reversal of 1673520912 is 2190253761.

It is an interprime number because it is at equal distance from previous prime (1673520881) and next prime (1673520943).

It can be written as a sum of positive squares in only one way, i.e., 1467196416 + 206324496 = 38304^2 + 14364^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 22924908 + ... + 22924980.

Almost surely, 2^1673520912 is an apocalyptic number.

1673520912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673520912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3014037279).

1673520912 is an abundant number, since it is smaller than the sum of its proper divisors (4354553646).

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

1673520912 is a wasteful number, since it uses less digits than its factorization.

1673520912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1673520912 is about 40908.6899325803. The cubic root of 1673520912 is about 1187.2541997921.

The spelling of 1673520912 in words is "one billion, six hundred seventy-three million, five hundred twenty thousand, nine hundred twelve".