1616372394 has 64 divisors (see below), whose sum is σ = 4063481856. Its totient is φ = 417219264.

The previous prime is 1616372383. The next prime is 1616372431. The reversal of 1616372394 is 4932736161.

It is a super-2 number, since 2×1616372394² = 5225319432170582472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5832 + ... + 57155.

It is an arithmetic number, because the mean of its divisors is an integer number (63491904).

Almost surely, 2^1616372394 is an apocalyptic number.

1616372394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616372394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031740928).

1616372394 is an abundant number, since it is smaller than the sum of its proper divisors (2447109462).

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

1616372394 is a wasteful number, since it uses less digits than its factorization.

1616372394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63059.

The product of its digits is 163296, while the sum is 42.

The square root of 1616372394 is about 40204.1340411655. The cubic root of 1616372394 is about 1173.5829953802.

The spelling of 1616372394 in words is "one billion, six hundred sixteen million, three hundred seventy-two thousand, three hundred ninety-four".