1061641265 has 8 divisors (see below), whose sum is σ = 1274676288. Its totient is φ = 848841840.

The previous prime is 1061641247. The next prime is 1061641277. The reversal of 1061641265 is 5621461601.

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

It is not a de Polignac number, because 1061641265 - 2²⁶ = 994532401 is a prime.

It is a super-2 number, since 2×1061641265² = 2254164351101600450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48827 + ... + 67136.

It is an arithmetic number, because the mean of its divisors is an integer number (159334536).

Almost surely, 2^1061641265 is an apocalyptic number.

It is an amenable number.

1061641265 is a deficient number, since it is larger than the sum of its proper divisors (213035023).

1061641265 is a wasteful number, since it uses less digits than its factorization.

1061641265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117799.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1061641265 is about 32582.8369697913. The cubic root of 1061641265 is about 1020.1387947102.

The spelling of 1061641265 in words is "one billion, sixty-one million, six hundred forty-one thousand, two hundred sixty-five".