1061645166 has 24 divisors (see below), whose sum is σ = 2379550680. Its totient is φ = 341678736.

The previous prime is 1061645149. The next prime is 1061645231. The reversal of 1061645166 is 6615461601.

It is a happy number.

1061645166 is a `hidden beast` number, since 1 + 0 + 6 + 1 + 645 + 1 + 6 + 6 = 666.

It is a super-2 number, since 2×1061645166² = 2254180916982335112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061645166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016380 + ... + 1017423.

It is an arithmetic number, because the mean of its divisors is an integer number (99147945).

Almost surely, 2^1061645166 is an apocalyptic number.

1061645166 is an abundant number, since it is smaller than the sum of its proper divisors (1317905514).

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

1061645166 is a wasteful number, since it uses less digits than its factorization.

1061645166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033840 (or 2033837 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1061645166 is about 32582.8968325408. The cubic root of 1061645166 is about 1020.1400442084.

The spelling of 1061645166 in words is "one billion, sixty-one million, six hundred forty-five thousand, one hundred sixty-six".