1667467949 has 8 divisors (see below), whose sum is σ = 2005976640. Its totient is φ = 1354034016.

The previous prime is 1667467943. The next prime is 1667467957. The reversal of 1667467949 is 9497647661.

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

It is a cyclic number.

It is not a de Polignac number, because 1667467949 - 2¹⁶ = 1667402413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667467943) 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, 6268544 + ... + 6268809.

It is an arithmetic number, because the mean of its divisors is an integer number (250747080).

Almost surely, 2^1667467949 is an apocalyptic number.

1667467949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1667467949 is a deficient number, since it is larger than the sum of its proper divisors (338508691).

1667467949 is a wasteful number, since it uses less digits than its factorization.

1667467949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12537379.

The product of its digits is 13716864, while the sum is 59.

The square root of 1667467949 is about 40834.6415314253. The cubic root of 1667467949 is about 1185.8210761064.

The spelling of 1667467949 in words is "one billion, six hundred sixty-seven million, four hundred sixty-seven thousand, nine hundred forty-nine".