1266537948 has 48 divisors (see below), whose sum is σ = 3350094720. Its totient is φ = 369192384.

The previous prime is 1266537887. The next prime is 1266537959. The reversal of 1266537948 is 8497356621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266537948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210690 + ... + 216617.

It is an arithmetic number, because the mean of its divisors is an integer number (69793640).

Almost surely, 2^1266537948 is an apocalyptic number.

It is an amenable number.

1266537948 is an abundant number, since it is smaller than the sum of its proper divisors (2083556772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266537948 is a wasteful number, since it uses less digits than its factorization.

1266537948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427346 (or 427344 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 1266537948 is about 35588.4524530078. The cubic root of 1266537948 is about 1081.9472038819.

The spelling of 1266537948 in words is "one billion, two hundred sixty-six million, five hundred thirty-seven thousand, nine hundred forty-eight".