1670627658 has 96 divisors (see below), whose sum is σ = 4018899456. Its totient is φ = 461335392.

The previous prime is 1670627641. The next prime is 1670627669. The reversal of 1670627658 is 8567260761.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1301485 + ... + 1302767.

It is an arithmetic number, because the mean of its divisors is an integer number (41863536).

Almost surely, 2^1670627658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670627658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009449728).

1670627658 is an abundant number, since it is smaller than the sum of its proper divisors (2348271798).

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

1670627658 is a wasteful number, since it uses less digits than its factorization.

1670627658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 1670627658 is about 40873.3122954331. The cubic root of 1670627658 is about 1186.5696133050.

The spelling of 1670627658 in words is "one billion, six hundred seventy million, six hundred twenty-seven thousand, six hundred fifty-eight".