1650423643 has 16 divisors (see below), whose sum is σ = 1816843392. Its totient is φ = 1486800000.

The previous prime is 1650423637. The next prime is 1650423653. The reversal of 1650423643 is 3463240561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1650423643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1650423599 and 1650423608.

It is not an unprimeable number, because it can be changed into a prime (1650423653) 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, 581155 + ... + 583987.

It is an arithmetic number, because the mean of its divisors is an integer number (113552712).

Almost surely, 2^1650423643 is an apocalyptic number.

1650423643 is a deficient number, since it is larger than the sum of its proper divisors (166419749).

1650423643 is a wasteful number, since it uses less digits than its factorization.

1650423643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1650423643 is about 40625.4063733521. The cubic root of 1650423643 is about 1181.7668740202.

The spelling of 1650423643 in words is "one billion, six hundred fifty million, four hundred twenty-three thousand, six hundred forty-three".