1631054146 has 4 divisors (see below), whose sum is σ = 2446581222. Its totient is φ = 815527072.

The previous prime is 1631054143. The next prime is 1631054147. The reversal of 1631054146 is 6414501361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1380939921 + 250114225 = 37161^2 + 15815^2 .

It is not an unprimeable number, because it can be changed into a prime (1631054143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407763535 + ... + 407763538.

Almost surely, 2^1631054146 is an apocalyptic number.

1631054146 is a deficient number, since it is larger than the sum of its proper divisors (815527076).

1631054146 is an equidigital number, since it uses as much as digits as its factorization.

1631054146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815527075.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1631054146 is about 40386.3113690765. The cubic root of 1631054146 is about 1177.1255676026.

The spelling of 1631054146 in words is "one billion, six hundred thirty-one million, fifty-four thousand, one hundred forty-six".