1901481039364 has 81 divisors (see below), whose sum is σ = 3598112310471. Its totient is φ = 879158261520.

The previous prime is 1901481039323. The next prime is 1901481039373. The reversal of 1901481039364 is 4639301841091.

The square root of 1901481039364 is 1378942.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1966370809 + ... + 1966371775.

Almost surely, 2^{1901481039364} is an apocalyptic number.

1901481039364 is the 1378942-nd square number.

It is an amenable number.

1901481039364 is a deficient number, since it is larger than the sum of its proper divisors (1696631271107).

1901481039364 is an frugal number, since it uses more digits than its factorization.

1901481039364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

Multiplying 1901481039364 by its sum of digits (49), we get a square (93172570928836 = 9652594²).

The spelling of 1901481039364 in words is "one trillion, nine hundred one billion, four hundred eighty-one million, thirty-nine thousand, three hundred sixty-four".