1267438497 has 16 divisors (see below), whose sum is σ = 1820988288. Its totient is φ = 779500800.

The previous prime is 1267438489. The next prime is 1267438499. The reversal of 1267438497 is 7948347621.

It is not a de Polignac number, because 1267438497 - 2³ = 1267438489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1267438499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64372 + ... + 81722.

It is an arithmetic number, because the mean of its divisors is an integer number (113811768).

Almost surely, 2^1267438497 is an apocalyptic number.

It is an amenable number.

1267438497 is a deficient number, since it is larger than the sum of its proper divisors (553549791).

1267438497 is a wasteful number, since it uses less digits than its factorization.

1267438497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19240.

The product of its digits is 2032128, while the sum is 51.

The square root of 1267438497 is about 35601.1024688843. The cubic root of 1267438497 is about 1082.2035761537.

The spelling of 1267438497 in words is "one billion, two hundred sixty-seven million, four hundred thirty-eight thousand, four hundred ninety-seven".