1642018490 has 16 divisors (see below), whose sum is σ = 3377866752. Its totient is φ = 562977744.

The previous prime is 1642018487. The next prime is 1642018517. The reversal of 1642018490 is 948102461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1642018490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11728634 + ... + 11728773.

It is an arithmetic number, because the mean of its divisors is an integer number (211116672).

Almost surely, 2^1642018490 is an apocalyptic number.

1642018490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1642018490 is an abundant number, since it is smaller than the sum of its proper divisors (1735848262).

1642018490 is a wasteful number, since it uses less digits than its factorization.

1642018490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23457421.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1642018490 is about 40521.8273279969. The cubic root of 1642018490 is about 1179.7573210602.

The spelling of 1642018490 in words is "one billion, six hundred forty-two million, eighteen thousand, four hundred ninety".