1656374422 has 4 divisors (see below), whose sum is σ = 2484561636. Its totient is φ = 828187210.

The previous prime is 1656374389. The next prime is 1656374431. The reversal of 1656374422 is 2244736561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2244736561 = 29 ⋅77404709.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414093604 + ... + 414093607.

It is an arithmetic number, because the mean of its divisors is an integer number (621140409).

Almost surely, 2^1656374422 is an apocalyptic number.

1656374422 is a deficient number, since it is larger than the sum of its proper divisors (828187214).

1656374422 is an equidigital number, since it uses as much as digits as its factorization.

1656374422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828187213.

The product of its digits is 241920, while the sum is 40.

The square root of 1656374422 is about 40698.5800980820. The cubic root of 1656374422 is about 1183.1854993436.

The spelling of 1656374422 in words is "one billion, six hundred fifty-six million, three hundred seventy-four thousand, four hundred twenty-two".