1617894480 has 40 divisors (see below), whose sum is σ = 5015473632. Its totient is φ = 431438464.

The previous prime is 1617894461. The next prime is 1617894491. The reversal of 1617894480 is 844987161.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 3370374 + ... + 3370853.

Almost surely, 2^1617894480 is an apocalyptic number.

1617894480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1617894480 is an abundant number, since it is smaller than the sum of its proper divisors (3397579152).

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

1617894480 is a wasteful number, since it uses less digits than its factorization.

1617894480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741243 (or 6741237 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 1617894480 is about 40223.0590582069. The cubic root of 1617894480 is about 1173.9512549571.

The spelling of 1617894480 in words is "one billion, six hundred seventeen million, eight hundred ninety-four thousand, four hundred eighty".