1640115416 has 48 divisors (see below), whose sum is σ = 3357676800. Its totient is φ = 750068928.

The previous prime is 1640115403. The next prime is 1640115437. The reversal of 1640115416 is 6145110461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73961 + ... + 93543.

It is an arithmetic number, because the mean of its divisors is an integer number (69951600).

Almost surely, 2^1640115416 is an apocalyptic number.

It is an amenable number.

1640115416 is an abundant number, since it is smaller than the sum of its proper divisors (1717561384).

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

1640115416 is a wasteful number, since it uses less digits than its factorization.

1640115416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19656 (or 19633 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1640115416 is about 40498.3384350519. The cubic root of 1640115416 is about 1179.3013713806.

Adding to 1640115416 its reverse (6145110461), we get a palindrome (7785225877).

The spelling of 1640115416 in words is "one billion, six hundred forty million, one hundred fifteen thousand, four hundred sixteen".