1690678034 has 8 divisors (see below), whose sum is σ = 2548890828. Its totient is φ = 841047760.

The previous prime is 1690677991. The next prime is 1690678039. The reversal of 1690678034 is 4308760961.

It can be written as a sum of positive squares in 2 ways, for example, as 1669948225 + 20729809 = 40865^2 + 4553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1690678039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145137 + ... + 2145924.

Almost surely, 2^1690678034 is an apocalyptic number.

1690678034 is a deficient number, since it is larger than the sum of its proper divisors (858212794).

1690678034 is a wasteful number, since it uses less digits than its factorization.

1690678034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291260.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1690678034 is about 41117.8554158653. The cubic root of 1690678034 is about 1191.2977002195.

The spelling of 1690678034 in words is "one billion, six hundred ninety million, six hundred seventy-eight thousand, thirty-four".