1630206356 has 12 divisors (see below), whose sum is σ = 2853925620. Its totient is φ = 814799040.

The previous prime is 1630206329. The next prime is 1630206373. The reversal of 1630206356 is 6536020361.

It can be written as a sum of positive squares in 2 ways, for example, as 1243690756 + 386515600 = 35266^2 + 19660^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63755 + ... + 85586.

It is an arithmetic number, because the mean of its divisors is an integer number (237827135).

Almost surely, 2^1630206356 is an apocalyptic number.

It is an amenable number.

1630206356 is a deficient number, since it is larger than the sum of its proper divisors (1223719264).

1630206356 is a wasteful number, since it uses less digits than its factorization.

1630206356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152074 (or 152072 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 1630206356 is about 40375.8139979865. The cubic root of 1630206356 is about 1176.9215833177.

The spelling of 1630206356 in words is "one billion, six hundred thirty million, two hundred six thousand, three hundred fifty-six".