1611793616 has 10 divisors (see below), whose sum is σ = 3122850162. Its totient is φ = 805896800.

The previous prime is 1611793549. The next prime is 1611793619. The reversal of 1611793616 is 6163971161.

It can be written as a sum of positive squares in only one way, i.e., 1453134400 + 158659216 = 38120^2 + 12596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611793619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50368535 + ... + 50368566.

Almost surely, 2^1611793616 is an apocalyptic number.

1611793616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1611793616 is a deficient number, since it is larger than the sum of its proper divisors (1511056546).

1611793616 is a wasteful number, since it uses less digits than its factorization.

1611793616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100737109 (or 100737103 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 1611793616 is about 40147.1495376695. The cubic root of 1611793616 is about 1172.4737918289.

The spelling of 1611793616 in words is "one billion, six hundred eleven million, seven hundred ninety-three thousand, six hundred sixteen".