1917414144 has 54 divisors (see below), whose sum is σ = 5528384316. Its totient is φ = 639137280.

The previous prime is 1917414137. The next prime is 1917414179. The reversal of 1917414144 is 4414147191.

It is a super-2 number, since 2×1917414144² = 7352953999222505472, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1917414099 and 1917414108.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413802 + ... + 418409.

It is a self-describing number.

Almost surely, 2^1917414144 is an apocalyptic number.

It is an amenable number.

1917414144 is an abundant number, since it is smaller than the sum of its proper divisors (3610970172).

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

1917414144 is an equidigital number, since it uses as much as digits as its factorization.

1917414144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832233 (or 832216 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 1917414144 is about 43788.2877491231. The cubic root of 1917414144 is about 1242.3347756013.

The spelling of 1917414144 in words is "one billion, nine hundred seventeen million, four hundred fourteen thousand, one hundred forty-four".