1438308764 has 12 divisors (see below), whose sum is σ = 2517419688. Its totient is φ = 719046000.

The previous prime is 1438308713. The next prime is 1438308791. The reversal of 1438308764 is 4678038341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7739 + ... + 54189.

It is an arithmetic number, because the mean of its divisors is an integer number (209784974).

Almost surely, 2^1438308764 is an apocalyptic number.

It is an amenable number.

1438308764 is a deficient number, since it is larger than the sum of its proper divisors (1079110924).

1438308764 is a wasteful number, since it uses less digits than its factorization.

1438308764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54196 (or 54194 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 1438308764 is about 37925.0413842886. The cubic root of 1438308764 is about 1128.8009742468.

The spelling of 1438308764 in words is "one billion, four hundred thirty-eight million, three hundred eight thousand, seven hundred sixty-four".