1667472879 has 8 divisors (see below), whose sum is σ = 2224594432. Its totient is φ = 1110999960.

The previous prime is 1667472853. The next prime is 1667472899. The reversal of 1667472879 is 9782747661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1667472879 - 2⁵ = 1667472847 is a prime.

It is a super-3 number, since 3×1667472879³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667472899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156127 + ... + 166464.

It is an arithmetic number, because the mean of its divisors is an integer number (278074304).

Almost surely, 2^1667472879 is an apocalyptic number.

1667472879 is a deficient number, since it is larger than the sum of its proper divisors (557121553).

1667472879 is a wasteful number, since it uses less digits than its factorization.

1667472879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324317.

The product of its digits is 7112448, while the sum is 57.

The square root of 1667472879 is about 40834.7018967936. The cubic root of 1667472879 is about 1185.8222447630.

The spelling of 1667472879 in words is "one billion, six hundred sixty-seven million, four hundred seventy-two thousand, eight hundred seventy-nine".