1976972401 has 4 divisors (see below), whose sum is σ = 2081023600. Its totient is φ = 1872921204.

The previous prime is 1976972377. The next prime is 1976972407. The reversal of 1976972401 is 1042796791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1976972401 - 2⁹ = 1976971889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1976972407) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 52025571 + ... + 52025608.

It is an arithmetic number, because the mean of its divisors is an integer number (520255900).

Almost surely, 2^1976972401 is an apocalyptic number.

It is an amenable number.

1976972401 is a deficient number, since it is larger than the sum of its proper divisors (104051199).

1976972401 is a wasteful number, since it uses less digits than its factorization.

1976972401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104051198.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 1976972401 is about 44463.1577938410. The cubic root of 1976972401 is about 1255.0668791838.

The spelling of 1976972401 in words is "one billion, nine hundred seventy-six million, nine hundred seventy-two thousand, four hundred one".