1916213655 has 8 divisors (see below), whose sum is σ = 3065941872. Its totient is φ = 1021980608.

The previous prime is 1916213653. The next prime is 1916213729. The reversal of 1916213655 is 5563126191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1916213655 - 2¹ = 1916213653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916213653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63873774 + ... + 63873803.

It is an arithmetic number, because the mean of its divisors is an integer number (383242734).

Almost surely, 2^1916213655 is an apocalyptic number.

1916213655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1916213655 is a deficient number, since it is larger than the sum of its proper divisors (1149728217).

1916213655 is a wasteful number, since it uses less digits than its factorization.

1916213655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127747585.

The product of its digits is 48600, while the sum is 39.

The square root of 1916213655 is about 43774.5777249764. The cubic root of 1916213655 is about 1242.0754470674.

The spelling of 1916213655 in words is "one billion, nine hundred sixteen million, two hundred thirteen thousand, six hundred fifty-five".