1611653916 has 48 divisors (see below), whose sum is σ = 3945525248. Its totient is φ = 511358400.

The previous prime is 1611653867. The next prime is 1611653951. The reversal of 1611653916 is 6193561161.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12820 + ... + 58203.

Almost surely, 2^1611653916 is an apocalyptic number.

It is an amenable number.

1611653916 is an abundant number, since it is smaller than the sum of its proper divisors (2333871332).

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

1611653916 is a wasteful number, since it uses less digits than its factorization.

1611653916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71122 (or 71120 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 1611653916 is about 40145.4096504196. The cubic root of 1611653916 is about 1172.4399166645.

The spelling of 1611653916 in words is "one billion, six hundred eleven million, six hundred fifty-three thousand, nine hundred sixteen".