1973901361936 has 45 divisors (see below), whose sum is σ = 4448919922869. Its totient is φ = 845940867072.

The previous prime is 1973901361871. The next prime is 1973901361961. The reversal of 1973901361936 is 6391631093791.

The square root of 1973901361936 is 1404956.

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., 1973744010000 + 157351936 = 1404900^2 + 12544^2 .

It is a super-3 number, since 3×1973901361936³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39313680 + ... + 39363856.

Almost surely, 2^{1973901361936} is an apocalyptic number.

1973901361936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1973901361936 is the 1404956-th square number.

It is an amenable number.

1973901361936 is an abundant number, since it is smaller than the sum of its proper divisors (2475018560933).

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

1973901361936 is an frugal number, since it uses more digits than its factorization.

1973901361936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100376 (or 50186 counting only the distinct ones).

The product of its (nonzero) digits is 4960116, while the sum is 58.

The spelling of 1973901361936 in words is "one trillion, nine hundred seventy-three billion, nine hundred one million, three hundred sixty-one thousand, nine hundred thirty-six".