1630015489 has 4 divisors (see below), whose sum is σ = 1630135300. Its totient is φ = 1629895680.

The previous prime is 1630015487. The next prime is 1630015493. The reversal of 1630015489 is 9845100361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9845100361 = 83 ⋅118615667.

It can be written as a sum of positive squares in 2 ways, for example, as 547934464 + 1082081025 = 23408^2 + 32895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630015489 - 2¹ = 1630015487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630015483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36432 + ... + 67729.

It is an arithmetic number, because the mean of its divisors is an integer number (407533825).

Almost surely, 2^1630015489 is an apocalyptic number.

It is an amenable number.

1630015489 is a deficient number, since it is larger than the sum of its proper divisors (119811).

1630015489 is a wasteful number, since it uses less digits than its factorization.

1630015489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119810.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1630015489 is about 40373.4502984325. The cubic root of 1630015489 is about 1176.8756496115.

It can be divided in two parts, 163001 and 5489, that added together give a triangular number (168490 = T₅₈₀).

The spelling of 1630015489 in words is "one billion, six hundred thirty million, fifteen thousand, four hundred eighty-nine".