1260157823 has 2 divisors, whose sum is σ = 1260157824. Its totient is φ = 1260157822.

The previous prime is 1260157783. The next prime is 1260157867. The reversal of 1260157823 is 3287510621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1260157823 - 2¹⁶ = 1260092287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260157123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630078911 + 630078912.

It is an arithmetic number, because the mean of its divisors is an integer number (630078912).

Almost surely, 2^1260157823 is an apocalyptic number.

1260157823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260157823 is an equidigital number, since it uses as much as digits as its factorization.

1260157823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1260157823 is about 35498.7017086541. The cubic root of 1260157823 is about 1080.1273920944.

The spelling of 1260157823 in words is "one billion, two hundred sixty million, one hundred fifty-seven thousand, eight hundred twenty-three".