1394858640 has 160 divisors (see below), whose sum is σ = 5101387776. Its totient is φ = 308528640.

The previous prime is 1394858627. The next prime is 1394858657. The reversal of 1394858640 is 468584931.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1394858640.

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, 38689 + ... + 65471.

Almost surely, 2^1394858640 is an apocalyptic number.

1394858640 is a gapful number since it is divisible by the number (10) 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 1394858640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2550693888).

1394858640 is an abundant number, since it is smaller than the sum of its proper divisors (3706529136).

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

1394858640 is a wasteful number, since it uses less digits than its factorization.

1394858640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26837 (or 26831 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 1394858640 is about 37347.8063612845. The cubic root of 1394858640 is about 1117.3178378711.

The spelling of 1394858640 in words is "one billion, three hundred ninety-four million, eight hundred fifty-eight thousand, six hundred forty".