1650142638 has 32 divisors (see below), whose sum is σ = 3882690720. Its totient is φ = 517691520.

The previous prime is 1650142633. The next prime is 1650142639. The reversal of 1650142638 is 8362410561.

It is a happy number.

1650142638 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 14 + 2 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650142631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897853 + ... + 899688.

It is an arithmetic number, because the mean of its divisors is an integer number (121334085).

Almost surely, 2^1650142638 is an apocalyptic number.

1650142638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1650142638 is an abundant number, since it is smaller than the sum of its proper divisors (2232548082).

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

1650142638 is a wasteful number, since it uses less digits than its factorization.

1650142638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797569 (or 1797563 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1650142638 is about 40621.9477376455. The cubic root of 1650142638 is about 1181.6998000802.

It can be divided in two parts, 16 and 50142638, that multiplied together give a palindrome (802282208).

The spelling of 1650142638 in words is "one billion, six hundred fifty million, one hundred forty-two thousand, six hundred thirty-eight".