1630751946 has 8 divisors (see below), whose sum is σ = 3261503904. Its totient is φ = 543583980.

The previous prime is 1630751923. The next prime is 1630751951. The reversal of 1630751946 is 6491570361.

It is a sphenic number, since it is the product of 3 distinct primes.

1630751946 is an admirable number.

It is a super-4 number, since 4×1630751946⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1630751898 and 1630751907.

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, 135895990 + ... + 135896001.

It is an arithmetic number, because the mean of its divisors is an integer number (407687988).

Almost surely, 2^1630751946 is an apocalyptic number.

1630751946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630751946 is a wasteful number, since it uses less digits than its factorization.

1630751946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271791996.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1630751946 is about 40382.5698290735. The cubic root of 1630751946 is about 1177.0528642491.

The spelling of 1630751946 in words is "one billion, six hundred thirty million, seven hundred fifty-one thousand, nine hundred forty-six".