1267902493 has 12 divisors (see below), whose sum is σ = 1500850204. Its totient is φ = 1063972800.

The previous prime is 1267902481. The next prime is 1267902529. The reversal of 1267902493 is 3942097621.

It can be written as a sum of positive squares in 2 ways, for example, as 234794329 + 1033108164 = 15323^2 + 32142^2 .

It is not a de Polignac number, because 1267902493 - 2⁹ = 1267901981 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 (1267902413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401448 + ... + 404593.

Almost surely, 2^1267902493 is an apocalyptic number.

1267902493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1267902493 is a deficient number, since it is larger than the sum of its proper divisors (232947711).

1267902493 is a wasteful number, since it uses less digits than its factorization.

1267902493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806076 (or 806065 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1267902493 is about 35607.6184685244. The cubic root of 1267902493 is about 1082.3356211847.

The spelling of 1267902493 in words is "one billion, two hundred sixty-seven million, nine hundred two thousand, four hundred ninety-three".