1611059640 has 64 divisors (see below), whose sum is σ = 4894387200. Its totient is φ = 424175232.

The previous prime is 1611059599. The next prime is 1611059641. The reversal of 1611059640 is 469501161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611059641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75492 + ... + 94451.

It is an arithmetic number, because the mean of its divisors is an integer number (76474800).

Almost surely, 2^1611059640 is an apocalyptic number.

1611059640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611059640 is an abundant number, since it is smaller than the sum of its proper divisors (3283327560).

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

1611059640 is a wasteful number, since it uses less digits than its factorization.

1611059640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170036 (or 170032 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1611059640 is about 40138.0074243852. The cubic root of 1611059640 is about 1172.2957917268.

The spelling of 1611059640 in words is "one billion, six hundred eleven million, fifty-nine thousand, six hundred forty".