1670972658 has 32 divisors (see below), whose sum is σ = 3425996736. Its totient is φ = 543112128.

The previous prime is 1670972657. The next prime is 1670972659. The reversal of 1670972658 is 8562790761.

It is an interprime number because it is at equal distance from previous prime (1670972657) and next prime (1670972659).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1670972658.

It is not an unprimeable number, because it can be changed into a prime (1670972657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35716 + ... + 67952.

It is an arithmetic number, because the mean of its divisors is an integer number (107062398).

Almost surely, 2^1670972658 is an apocalyptic number.

1670972658 is an abundant number, since it is smaller than the sum of its proper divisors (1755024078).

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

1670972658 is a wasteful number, since it uses less digits than its factorization.

1670972658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32458.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 1670972658 is about 40877.5324353122. The cubic root of 1670972658 is about 1186.6512868681.

The spelling of 1670972658 in words is "one billion, six hundred seventy million, nine hundred seventy-two thousand, six hundred fifty-eight".