1650274420 has 24 divisors (see below), whose sum is σ = 3475521000. Its totient is φ = 658215552.

The previous prime is 1650274411. The next prime is 1650274441. The reversal of 1650274420 is 244720561.

It can be written as a sum of positive squares in 4 ways, for example, as 194546704 + 1455727716 = 13948^2 + 38154^2 .

It is a super-2 number, since 2×1650274420² = 5446811322612672800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111235 + ... + 125194.

It is an arithmetic number, because the mean of its divisors is an integer number (144813375).

Almost surely, 2^1650274420 is an apocalyptic number.

1650274420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1650274420 is an abundant number, since it is smaller than the sum of its proper divisors (1825246580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1650274420 is a wasteful number, since it uses less digits than its factorization.

1650274420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236787 (or 236785 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1650274420 is about 40623.5697594389. The cubic root of 1650274420 is about 1181.7312564755.

Adding to 1650274420 its reverse (244720561), we get a palindrome (1894994981).

The spelling of 1650274420 in words is "one billion, six hundred fifty million, two hundred seventy-four thousand, four hundred twenty".