1630252741 has 8 divisors (see below), whose sum is σ = 1756216280. Its totient is φ = 1504369152.

The previous prime is 1630252733. The next prime is 1630252807. The reversal of 1630252741 is 1472520361.

It can be written as a sum of positive squares in 4 ways, for example, as 99800100 + 1530452641 = 9990^2 + 39121^2 .

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

It is not a de Polignac number, because 1630252741 - 2³ = 1630252733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630252721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26365 + ... + 62893.

It is an arithmetic number, because the mean of its divisors is an integer number (219527035).

Almost surely, 2^1630252741 is an apocalyptic number.

It is an amenable number.

1630252741 is a deficient number, since it is larger than the sum of its proper divisors (125963539).

1630252741 is a wasteful number, since it uses less digits than its factorization.

1630252741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39975.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1630252741 is about 40376.3884095643. The cubic root of 1630252741 is about 1176.9327457062.

The spelling of 1630252741 in words is "one billion, six hundred thirty million, two hundred fifty-two thousand, seven hundred forty-one".