1270653949 has 4 divisors (see below), whose sum is σ = 1278449536. Its totient is φ = 1262858364.

The previous prime is 1270653941. The next prime is 1270653961. The reversal of 1270653949 is 9493560721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1270653949 - 2³ = 1270653941 is a prime.

It is a super-2 number, since 2×1270653949² = 3229122916218589202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1270653899 and 1270653908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270653941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897549 + ... + 3897874.

It is an arithmetic number, because the mean of its divisors is an integer number (319612384).

Almost surely, 2^1270653949 is an apocalyptic number.

It is an amenable number.

1270653949 is a deficient number, since it is larger than the sum of its proper divisors (7795587).

1270653949 is an equidigital number, since it uses as much as digits as its factorization.

1270653949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795586.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 1270653949 is about 35646.2333073215. The cubic root of 1270653949 is about 1083.1179755794.

The spelling of 1270653949 in words is "one billion, two hundred seventy million, six hundred fifty-three thousand, nine hundred forty-nine".