1630790287 has 16 divisors (see below), whose sum is σ = 1913891392. Its totient is φ = 1360696320.

The previous prime is 1630790269. The next prime is 1630790299. The reversal of 1630790287 is 7820970361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1630790287 - 2¹⁵ = 1630757519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630790257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21733 + ... + 61105.

It is an arithmetic number, because the mean of its divisors is an integer number (119618212).

Almost surely, 2^1630790287 is an apocalyptic number.

1630790287 is a deficient number, since it is larger than the sum of its proper divisors (283101105).

1630790287 is an equidigital number, since it uses as much as digits as its factorization.

1630790287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39538.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1630790287 is about 40383.0445484240. The cubic root of 1630790287 is about 1177.0620888342.

The spelling of 1630790287 in words is "one billion, six hundred thirty million, seven hundred ninety thousand, two hundred eighty-seven".