1656461146 has 4 divisors (see below), whose sum is σ = 2484691722. Its totient is φ = 828230572.

The previous prime is 1656461137. The next prime is 1656461159. The reversal of 1656461146 is 6411646561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6411646561 = 8423 ⋅761207.

It can be written as a sum of positive squares in only one way, i.e., 1533583921 + 122877225 = 39161^2 + 11085^2 .

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 junction number, because it is equal to n+sod(n) for n = 1656461099 and 1656461108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414115285 + ... + 414115288.

Almost surely, 2^1656461146 is an apocalyptic number.

1656461146 is a deficient number, since it is larger than the sum of its proper divisors (828230576).

1656461146 is an equidigital number, since it uses as much as digits as its factorization.

1656461146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828230575.

The product of its digits is 103680, while the sum is 40.

The square root of 1656461146 is about 40699.6455267119. The cubic root of 1656461146 is about 1183.2061486177.

The spelling of 1656461146 in words is "one billion, six hundred fifty-six million, four hundred sixty-one thousand, one hundred forty-six".