1631746036 has 6 divisors (see below), whose sum is σ = 2855555570. Its totient is φ = 815873016.

The previous prime is 1631745989. The next prime is 1631746079. The reversal of 1631746036 is 6306471361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1377152100 + 254593936 = 37110^2 + 15956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1631745986 and 1631746004.

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, 203968251 + ... + 203968258.

Almost surely, 2^1631746036 is an apocalyptic number.

It is an amenable number.

1631746036 is a deficient number, since it is larger than the sum of its proper divisors (1223809534).

1631746036 is a wasteful number, since it uses less digits than its factorization.

1631746036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407936513 (or 407936511 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1631746036 is about 40394.8763582710. The cubic root of 1631746036 is about 1177.2919888659.

The spelling of 1631746036 in words is "one billion, six hundred thirty-one million, seven hundred forty-six thousand, thirty-six".