1945662316900 has 27 divisors (see below), whose sum is σ = 4222117496569. Its totient is φ = 778259347280.

The previous prime is 1945662316877. The next prime is 1945662316987. The reversal of 1945662316900 is 96132665491.

It is a happy number.

The square root of 1945662316900 is 1394870.

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

It can be written as a sum of positive squares in only one way, i.e., 700438434084 + 1245223882816 = 836922^2 + 1115896^2 .

It is a super-2 number, since 2×1945662316900² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13878957 + ... + 14018443.

Almost surely, 2^{1945662316900} is an apocalyptic number.

1945662316900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1945662316900 is the 1394870-th square number.

It is an amenable number.

1945662316900 is an abundant number, since it is smaller than the sum of its proper divisors (2276455179669).

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

1945662316900 is an frugal number, since it uses more digits than its factorization.

1945662316900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278988 (or 139494 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 1945662316900 in words is "one trillion, nine hundred forty-five billion, six hundred sixty-two million, three hundred sixteen thousand, nine hundred".