1672515979 has 2 divisors, whose sum is σ = 1672515980. Its totient is φ = 1672515978.

The previous prime is 1672515941. The next prime is 1672515989. The reversal of 1672515979 is 9795152761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1672515979 - 2⁷ = 1672515851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672515989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836257989 + 836257990.

It is an arithmetic number, because the mean of its divisors is an integer number (836257990).

Almost surely, 2^1672515979 is an apocalyptic number.

1672515979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672515979 is an equidigital number, since it uses as much as digits as its factorization.

1672515979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1190700, while the sum is 52.

The square root of 1672515979 is about 40896.4054532914. The cubic root of 1672515979 is about 1187.0165073491.

The spelling of 1672515979 in words is "one billion, six hundred seventy-two million, five hundred fifteen thousand, nine hundred seventy-nine".