1690838794 has 16 divisors (see below), whose sum is σ = 2636169120. Its totient is φ = 812392560.

The previous prime is 1690838789. The next prime is 1690838803. The reversal of 1690838794 is 4978380961.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56844 + ... + 81319.

It is an arithmetic number, because the mean of its divisors is an integer number (164760570).

Almost surely, 2^1690838794 is an apocalyptic number.

1690838794 is a deficient number, since it is larger than the sum of its proper divisors (945330326).

1690838794 is a wasteful number, since it uses less digits than its factorization.

1690838794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138405.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 1690838794 is about 41119.8102378890. The cubic root of 1690838794 is about 1191.3354576447.

The spelling of 1690838794 in words is "one billion, six hundred ninety million, eight hundred thirty-eight thousand, seven hundred ninety-four".