1670990958 has 96 divisors (see below), whose sum is σ = 4621134336. Its totient is φ = 440689248.

The previous prime is 1670990927. The next prime is 1670990969. The reversal of 1670990958 is 8590990761.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 25335 + ... + 63117.

It is an arithmetic number, because the mean of its divisors is an integer number (48136816).

Almost surely, 2^1670990958 is an apocalyptic number.

1670990958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670990958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310567168).

1670990958 is an abundant number, since it is smaller than the sum of its proper divisors (2950143378).

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

1670990958 is a wasteful number, since it uses less digits than its factorization.

1670990958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37820 (or 37808 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 1670990958 is about 40877.7562740422. The cubic root of 1670990958 is about 1186.6556188040.

The spelling of 1670990958 in words is "one billion, six hundred seventy million, nine hundred ninety thousand, nine hundred fifty-eight".