1916023190400 has 864 divisors, whose sum is σ = 7536941302800. Its totient is φ = 463126118400.

The previous prime is 1916023190339. The next prime is 1916023190479. The reversal of 1916023190400 is 40913206191.

It is a happy number.

1916023190400 is a `hidden beast` number, since 1 + 9 + 1 + 60 + 2 + 3 + 190 + 400 = 666.

It is a super-2 number, since 2×1916023190400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1697097036 + ... + 1697098164.

Almost surely, 2^{1916023190400} is an apocalyptic number.

1916023190400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916023190400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3768470651400).

1916023190400 is an abundant number, since it is smaller than the sum of its proper divisors (5620918112400).

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

1916023190400 is a wasteful number, since it uses less digits than its factorization.

1916023190400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

Adding to 1916023190400 its reverse (40913206191), we get a palindrome (1956936396591).

The spelling of 1916023190400 in words is "one trillion, nine hundred sixteen billion, twenty-three million, one hundred ninety thousand, four hundred".