1376401776 has 80 divisors (see below), whose sum is σ = 3686442624. Its totient is φ = 442167552.

The previous prime is 1376401771. The next prime is 1376401783. The reversal of 1376401776 is 6771046731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376401771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186411 + ... + 193653.

Almost surely, 2^1376401776 is an apocalyptic number.

1376401776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1376401776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843221312).

1376401776 is an abundant number, since it is smaller than the sum of its proper divisors (2310040848).

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

1376401776 is a wasteful number, since it uses less digits than its factorization.

1376401776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398 (or 7392 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1376401776 is about 37099.8891642549. The cubic root of 1376401776 is about 1112.3677983883.

The spelling of 1376401776 in words is "one billion, three hundred seventy-six million, four hundred one thousand, seven hundred seventy-six".