1630544774 has 16 divisors (see below), whose sum is σ = 2629324800. Its totient is φ = 755929224.

The previous prime is 1630544767. The next prime is 1630544777. The reversal of 1630544774 is 4774450361.

It is a super-2 number, since 2×1630544774² = 5317352520037422152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630544777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454694 + ... + 458265.

It is an arithmetic number, because the mean of its divisors is an integer number (164332800).

Almost surely, 2^1630544774 is an apocalyptic number.

1630544774 is a deficient number, since it is larger than the sum of its proper divisors (998780026).

1630544774 is a wasteful number, since it uses less digits than its factorization.

1630544774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913027.

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 1630544774 is about 40380.0046310052. The cubic root of 1630544774 is about 1177.0030175667.

The spelling of 1630544774 in words is "one billion, six hundred thirty million, five hundred forty-four thousand, seven hundred seventy-four".