1631742748 has 12 divisors (see below), whose sum is σ = 2855906872. Its totient is φ = 815769360.

The previous prime is 1631742737. The next prime is 1631742787. The reversal of 1631742748 is 8472471361.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19186 + ... + 60262.

Almost surely, 2^1631742748 is an apocalyptic number.

It is an amenable number.

1631742748 is a deficient number, since it is larger than the sum of its proper divisors (1224164124).

1631742748 is a wasteful number, since it uses less digits than its factorization.

1631742748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51012 (or 51010 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 1631742748 is about 40394.8356600197. The cubic root of 1631742748 is about 1177.2911981100.

The spelling of 1631742748 in words is "one billion, six hundred thirty-one million, seven hundred forty-two thousand, seven hundred forty-eight".