1667339420 has 48 divisors (see below), whose sum is σ = 3534463296. Its totient is φ = 660672000.

The previous prime is 1667339417. The next prime is 1667339431. The reversal of 1667339420 is 249337661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125080 + ... + 1126560.

It is an arithmetic number, because the mean of its divisors is an integer number (73634652).

Almost surely, 2^1667339420 is an apocalyptic number.

1667339420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667339420 is an abundant number, since it is smaller than the sum of its proper divisors (1867123876).

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

1667339420 is a wasteful number, since it uses less digits than its factorization.

1667339420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 1667339420 is about 40833.0677270273. The cubic root of 1667339420 is about 1185.7906074921.

The spelling of 1667339420 in words is "one billion, six hundred sixty-seven million, three hundred thirty-nine thousand, four hundred twenty".