1667125151 has 4 divisors (see below), whose sum is σ = 1754868600. Its totient is φ = 1579381704.

The previous prime is 1667125147. The next prime is 1667125157. The reversal of 1667125151 is 1515217661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1515217661 = 3989 ⋅379849.

It is a cyclic number.

It is not a de Polignac number, because 1667125151 - 2² = 1667125147 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 (1667125157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43871696 + ... + 43871733.

It is an arithmetic number, because the mean of its divisors is an integer number (438717150).

Almost surely, 2^1667125151 is an apocalyptic number.

1667125151 is a deficient number, since it is larger than the sum of its proper divisors (87743449).

1667125151 is an equidigital number, since it uses as much as digits as its factorization.

1667125151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87743448.

The product of its digits is 12600, while the sum is 35.

The square root of 1667125151 is about 40830.4439236215. The cubic root of 1667125151 is about 1185.7398101861.

The spelling of 1667125151 in words is "one billion, six hundred sixty-seven million, one hundred twenty-five thousand, one hundred fifty-one".