1650450387 has 4 divisors (see below), whose sum is σ = 2200600520. Its totient is φ = 1100300256.

The previous prime is 1650450377. The next prime is 1650450413. The reversal of 1650450387 is 7830540561.

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

It is not a de Polignac number, because 1650450387 - 2⁷ = 1650450259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1650450337) 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, 275075062 + ... + 275075067.

It is an arithmetic number, because the mean of its divisors is an integer number (550150130).

Almost surely, 2^1650450387 is an apocalyptic number.

1650450387 is a deficient number, since it is larger than the sum of its proper divisors (550150133).

1650450387 is an equidigital number, since it uses as much as digits as its factorization.

1650450387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550150132.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 1650450387 is about 40625.7355256493. The cubic root of 1650450387 is about 1181.7732572303.

The spelling of 1650450387 in words is "one billion, six hundred fifty million, four hundred fifty thousand, three hundred eighty-seven".