1394694690 has 32 divisors (see below), whose sum is σ = 3348297216. Its totient is φ = 371804160.

The previous prime is 1394694689. The next prime is 1394694737. The reversal of 1394694690 is 964964931.

It is a super-2 number, since 2×1394694690² = 3890346556628392200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145135 + ... + 154445.

It is an arithmetic number, because the mean of its divisors is an integer number (104634288).

Almost surely, 2^1394694690 is an apocalyptic number.

1394694690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1394694690 is an abundant number, since it is smaller than the sum of its proper divisors (1953602526).

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

1394694690 is a wasteful number, since it uses less digits than its factorization.

1394694690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14314.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 1394694690 is about 37345.6113887562. The cubic root of 1394694690 is about 1117.2740600928.

The spelling of 1394694690 in words is "one billion, three hundred ninety-four million, six hundred ninety-four thousand, six hundred ninety".