1667425613 has 8 divisors (see below), whose sum is σ = 1967101440. Its totient is φ = 1383117840.

The previous prime is 1667425547. The next prime is 1667425621. The reversal of 1667425613 is 3165247661.

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 1667425613 - 2¹⁰ = 1667424589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667425813) 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, 3841778 + ... + 3842211.

It is an arithmetic number, because the mean of its divisors is an integer number (245887680).

Almost surely, 2^1667425613 is an apocalyptic number.

It is an amenable number.

1667425613 is a deficient number, since it is larger than the sum of its proper divisors (299675827).

1667425613 is an equidigital number, since it uses as much as digits as its factorization.

1667425613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684027.

The product of its digits is 181440, while the sum is 41.

The square root of 1667425613 is about 40834.1231447426. The cubic root of 1667425613 is about 1185.8110402621.

The spelling of 1667425613 in words is "one billion, six hundred sixty-seven million, four hundred twenty-five thousand, six hundred thirteen".