961745816 has 8 divisors (see below), whose sum is σ = 1803273420. Its totient is φ = 480872904.

The previous prime is 961745797. The next prime is 961745831. The reversal of 961745816 is 618547169.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×961745816³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60109106 + ... + 60109121.

Almost surely, 2^961745816 is an apocalyptic number.

It is an amenable number.

961745816 is a deficient number, since it is larger than the sum of its proper divisors (841527604).

961745816 is a wasteful number, since it uses less digits than its factorization.

961745816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120218233 (or 120218229 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 961745816 is about 31012.0269572951. The cubic root of 961745816 is about 987.0824610053.

The spelling of 961745816 in words is "nine hundred sixty-one million, seven hundred forty-five thousand, eight hundred sixteen".