1673312440 has 16 divisors (see below), whose sum is σ = 3764953080. Its totient is φ = 669324960.

The previous prime is 1673312413. The next prime is 1673312467. The reversal of 1673312440 is 442133761.

It is an interprime number because it is at equal distance from previous prime (1673312413) and next prime (1673312467).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20916366 + ... + 20916445.

Almost surely, 2^1673312440 is an apocalyptic number.

1673312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1673312440 is an abundant number, since it is smaller than the sum of its proper divisors (2091640640).

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

1673312440 is a wasteful number, since it uses less digits than its factorization.

1673312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41832822 (or 41832818 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1673312440 is about 40906.1418371374. The cubic root of 1673312440 is about 1187.2048986383.

The spelling of 1673312440 in words is "one billion, six hundred seventy-three million, three hundred twelve thousand, four hundred forty".