1389495734 has 64 divisors (see below), whose sum is σ = 2472768000. Its totient is φ = 580037920.

The previous prime is 1389495727. The next prime is 1389495839. The reversal of 1389495734 is 4375949831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7762457 + ... + 7762635.

It is an arithmetic number, because the mean of its divisors is an integer number (38637000).

Almost surely, 2^1389495734 is an apocalyptic number.

1389495734 is a deficient number, since it is larger than the sum of its proper divisors (1083272266).

1389495734 is a wasteful number, since it uses less digits than its factorization.

1389495734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 244 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 1389495734 is about 37275.9404173791. The cubic root of 1389495734 is about 1115.8840566547.

The spelling of 1389495734 in words is "one billion, three hundred eighty-nine million, four hundred ninety-five thousand, seven hundred thirty-four".