1261260654 has 8 divisors (see below), whose sum is σ = 2522521320. Its totient is φ = 420420216.

The previous prime is 1261260643. The next prime is 1261260673. The reversal of 1261260654 is 4560621621.

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

1261260654 is an admirable number.

It is a congruent number.

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, 105105049 + ... + 105105060.

It is an arithmetic number, because the mean of its divisors is an integer number (315315165).

Almost surely, 2^1261260654 is an apocalyptic number.

1261260654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1261260654 is a wasteful number, since it uses less digits than its factorization.

1261260654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210210114.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1261260654 is about 35514.2317106818. The cubic root of 1261260654 is about 1080.4423924924.

The spelling of 1261260654 in words is "one billion, two hundred sixty-one million, two hundred sixty thousand, six hundred fifty-four".