1615117423 has 2 divisors, whose sum is σ = 1615117424. Its totient is φ = 1615117422.

The previous prime is 1615117409. The next prime is 1615117433. The reversal of 1615117423 is 3247115161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615117423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615117433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807558711 + 807558712.

It is an arithmetic number, because the mean of its divisors is an integer number (807558712).

Almost surely, 2^1615117423 is an apocalyptic number.

1615117423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615117423 is an equidigital number, since it uses as much as digits as its factorization.

1615117423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 1615117423 is about 40188.5235235135. The cubic root of 1615117423 is about 1173.2791887481.

The spelling of 1615117423 in words is "one billion, six hundred fifteen million, one hundred seventeen thousand, four hundred twenty-three".