1266923090 has 8 divisors (see below), whose sum is σ = 2280461580. Its totient is φ = 506769232.

The previous prime is 1266923057. The next prime is 1266923123. The reversal of 1266923090 is 903296621.

It is an interprime number because it is at equal distance from previous prime (1266923057) and next prime (1266923123).

It can be written as a sum of positive squares in 2 ways, for example, as 1224790009 + 42133081 = 34997^2 + 6491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63346145 + ... + 63346164.

Almost surely, 2^1266923090 is an apocalyptic number.

1266923090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266923090 is a deficient number, since it is larger than the sum of its proper divisors (1013538490).

1266923090 is a wasteful number, since it uses less digits than its factorization.

1266923090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126692316.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1266923090 is about 35593.8630946403. The cubic root of 1266923090 is about 1082.0568626777.

The spelling of 1266923090 in words is "one billion, two hundred sixty-six million, nine hundred twenty-three thousand, ninety".