1901308816 has 45 divisors (see below), whose sum is σ = 4053209979. Its totient is φ = 863359200.

The previous prime is 1901308757. The next prime is 1901308819. The reversal of 1901308816 is 6188031091.

The square root of 1901308816 is 43604.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1901308816² = 7229950427598643712, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901308819) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1918081 + ... + 1919071.

Almost surely, 2^1901308816 is an apocalyptic number.

1901308816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1901308816 is the 43604-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1901308816

1901308816 is an abundant number, since it is smaller than the sum of its proper divisors (2151901163).

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

1901308816 is an frugal number, since it uses more digits than its factorization.

1901308816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The cubic root of 1901308816 is about 1238.8466591242.

The spelling of 1901308816 in words is "one billion, nine hundred one million, three hundred eight thousand, eight hundred sixteen".