1402377664 has 42 divisors (see below), whose sum is σ = 2819317704. Its totient is φ = 692115840.

The previous prime is 1402377623. The next prime is 1402377673. The reversal of 1402377664 is 4667732041.

It is a super-2 number, since 2×1402377664² = 3933326224972193792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 397669 + ... + 401179.

It is an arithmetic number, because the mean of its divisors is an integer number (67126612).

Almost surely, 2^1402377664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402377664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409658852).

1402377664 is an abundant number, since it is smaller than the sum of its proper divisors (1416940040).

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

1402377664 is an frugal number, since it uses more digits than its factorization.

1402377664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 1402377664 is about 37448.3332606406. Note that the first 3 decimals coincide. The cubic root of 1402377664 is about 1119.3218854304.

It can be divided in two parts, 1402377 and 664, that added together give a palindrome (1403041).

The spelling of 1402377664 in words is "one billion, four hundred two million, three hundred seventy-seven thousand, six hundred sixty-four".