1261187414 has 16 divisors (see below), whose sum is σ = 1911856128. Its totient is φ = 623913192.

The previous prime is 1261187327. The next prime is 1261187441. The reversal of 1261187414 is 4147811621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320849 + ... + 324755.

It is an arithmetic number, because the mean of its divisors is an integer number (119491008).

Almost surely, 2^1261187414 is an apocalyptic number.

1261187414 is a deficient number, since it is larger than the sum of its proper divisors (650668714).

1261187414 is a wasteful number, since it uses less digits than its factorization.

1261187414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579.

The product of its digits is 10752, while the sum is 35.

The square root of 1261187414 is about 35513.2005597918. The cubic root of 1261187414 is about 1080.4214787259.

The spelling of 1261187414 in words is "one billion, two hundred sixty-one million, one hundred eighty-seven thousand, four hundred fourteen".