1261671470 has 16 divisors (see below), whose sum is σ = 2271516480. Its totient is φ = 504555744.

The previous prime is 1261671469. The next prime is 1261671533. The reversal of 1261671470 is 741761621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1261671470.

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, 44411 + ... + 67049.

It is an arithmetic number, because the mean of its divisors is an integer number (141969780).

Almost surely, 2^1261671470 is an apocalyptic number.

1261671470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261671470 is a deficient number, since it is larger than the sum of its proper divisors (1009845010).

1261671470 is a wasteful number, since it uses less digits than its factorization.

1261671470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28219.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1261671470 is about 35520.0150619337. The cubic root of 1261671470 is about 1080.5596864706.

The spelling of 1261671470 in words is "one billion, two hundred sixty-one million, six hundred seventy-one thousand, four hundred seventy".