1667488401 has 12 divisors (see below), whose sum is σ = 2550276612. Its totient is φ = 1046267136.

The previous prime is 1667488397. The next prime is 1667488423. The reversal of 1667488401 is 1048847661.

1667488401 is a `hidden beast` number, since 166 + 7 + 4 + 88 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 987530625 + 679957776 = 31425^2 + 26076^2 .

It is not a de Polignac number, because 1667488401 - 2² = 1667488397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1667488301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5449156 + ... + 5449461.

It is an arithmetic number, because the mean of its divisors is an integer number (212523051).

Almost surely, 2^1667488401 is an apocalyptic number.

It is an amenable number.

1667488401 is a deficient number, since it is larger than the sum of its proper divisors (882788211).

1667488401 is a wasteful number, since it uses less digits than its factorization.

1667488401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898640 (or 10898637 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1667488401 is about 40834.8919552875. The cubic root of 1667488401 is about 1185.8259242382.

The spelling of 1667488401 in words is "one billion, six hundred sixty-seven million, four hundred eighty-eight thousand, four hundred one".