1691979034 has 8 divisors (see below), whose sum is σ = 2538416628. Its totient is φ = 845840160.

The previous prime is 1691979019. The next prime is 1691979041. The reversal of 1691979034 is 4309791961.

It can be written as a sum of positive squares in 2 ways, for example, as 1402877025 + 289102009 = 37455^2 + 17003^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59937 + ... + 83524.

Almost surely, 2^1691979034 is an apocalyptic number.

1691979034 is a deficient number, since it is larger than the sum of its proper divisors (846437594).

1691979034 is a wasteful number, since it uses less digits than its factorization.

1691979034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149360.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1691979034 is about 41133.6727511658. The cubic root of 1691979034 is about 1191.6031951936.

The spelling of 1691979034 in words is "one billion, six hundred ninety-one million, nine hundred seventy-nine thousand, thirty-four".