1916422558 has 4 divisors (see below), whose sum is σ = 2874633840. Its totient is φ = 958211278.

The previous prime is 1916422531. The next prime is 1916422559. The reversal of 1916422558 is 8552246191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8552246191 = 5237 ⋅1633043.

It is a super-2 number, since 2×1916422558² = 7345350841622526728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916422559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479105638 + ... + 479105641.

It is an arithmetic number, because the mean of its divisors is an integer number (718658460).

Almost surely, 2^1916422558 is an apocalyptic number.

1916422558 is a deficient number, since it is larger than the sum of its proper divisors (958211282).

1916422558 is an equidigital number, since it uses as much as digits as its factorization.

1916422558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958211281.

The product of its digits is 172800, while the sum is 43.

The square root of 1916422558 is about 43776.9637823365. The cubic root of 1916422558 is about 1242.1205818845.

The spelling of 1916422558 in words is "one billion, nine hundred sixteen million, four hundred twenty-two thousand, five hundred fifty-eight".