1916689410 has 48 divisors (see below), whose sum is σ = 5245680960. Its totient is φ = 484215840.

The previous prime is 1916689409. The next prime is 1916689447. The reversal of 1916689410 is 149866191.

It is a super-2 number, since 2×1916689410² = 7347396588812296200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 558726 + ... + 562145.

It is an arithmetic number, because the mean of its divisors is an integer number (109285020).

Almost surely, 2^1916689410 is an apocalyptic number.

1916689410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916689410 is an abundant number, since it is smaller than the sum of its proper divisors (3328991550).

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

1916689410 is a wasteful number, since it uses less digits than its factorization.

1916689410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120903 (or 1120900 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1916689410 is about 43780.0115349459. The cubic root of 1916689410 is about 1242.1782321796.

The spelling of 1916689410 in words is "one billion, nine hundred sixteen million, six hundred eighty-nine thousand, four hundred ten".