1667127940 has 48 divisors (see below), whose sum is σ = 3526024320. Its totient is φ = 662100480.

The previous prime is 1667127923. The next prime is 1667127947. The reversal of 1667127940 is 497217661.

It is not an unprimeable number, because it can be changed into a prime (1667127947) 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, 2692951 + ... + 2693569.

It is an arithmetic number, because the mean of its divisors is an integer number (73458840).

Almost surely, 2^1667127940 is an apocalyptic number.

1667127940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667127940 is an abundant number, since it is smaller than the sum of its proper divisors (1858896380).

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

1667127940 is a wasteful number, since it uses less digits than its factorization.

1667127940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1667127940 is about 40830.4780770444. The cubic root of 1667127940 is about 1185.7404714095.

The spelling of 1667127940 in words is "one billion, six hundred sixty-seven million, one hundred twenty-seven thousand, nine hundred forty".