1623098640 has 80 divisors (see below), whose sum is σ = 5148652608. Its totient is φ = 422757888.

The previous prime is 1623098639. The next prime is 1623098657. The reversal of 1623098640 is 468903261.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68319 + ... + 88958.

Almost surely, 2^1623098640 is an apocalyptic number.

1623098640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623098640 is an abundant number, since it is smaller than the sum of its proper divisors (3525553968).

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

1623098640 is a wasteful number, since it uses less digits than its factorization.

1623098640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157336 (or 157330 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1623098640 is about 40287.6983705945. The cubic root of 1623098640 is about 1175.2086281124.

The spelling of 1623098640 in words is "one billion, six hundred twenty-three million, ninety-eight thousand, six hundred forty".