1976113405 has 48 divisors (see below), whose sum is σ = 2929492656. Its totient is φ = 1271531520.

The previous prime is 1976113267. The next prime is 1976113441. The reversal of 1976113405 is 5043116791.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 88906041 + 1887207364 = 9429^2 + 43442^2 .

It is not a de Polignac number, because 1976113405 - 2²⁵ = 1942558973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2252827 + ... + 2253703.

It is an arithmetic number, because the mean of its divisors is an integer number (61031097).

Almost surely, 2^1976113405 is an apocalyptic number.

It is an amenable number.

1976113405 is a deficient number, since it is larger than the sum of its proper divisors (953379251).

1976113405 is a wasteful number, since it uses less digits than its factorization.

1976113405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1976113405 is about 44453.4971065270. The cubic root of 1976113405 is about 1254.8850770149.

The spelling of 1976113405 in words is "one billion, nine hundred seventy-six million, one hundred thirteen thousand, four hundred five".