1630000451 has 4 divisors (see below), whose sum is σ = 1630306992. Its totient is φ = 1629693912.

The previous prime is 1630000433. The next prime is 1630000457. The reversal of 1630000451 is 1540000361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1630000451 - 2¹⁴ = 1629984067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630000457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145151 + ... + 155976.

It is an arithmetic number, because the mean of its divisors is an integer number (407576748).

Almost surely, 2^1630000451 is an apocalyptic number.

1630000451 is a deficient number, since it is larger than the sum of its proper divisors (306541).

1630000451 is an equidigital number, since it uses as much as digits as its factorization.

1630000451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306540.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1630000451 is about 40373.2640617525. The cubic root of 1630000451 is about 1176.8720304413.

The spelling of 1630000451 in words is "one billion, six hundred thirty million, four hundred fifty-one", and thus it is an aban number.