1486721890 has 32 divisors (see below), whose sum is σ = 2724897024. Its totient is φ = 583880640.

The previous prime is 1486721881. The next prime is 1486721891. The reversal of 1486721890 is 981276841.

It is a self number, because there is not a number n which added to its sum of digits gives 1486721890.

It is not an unprimeable number, because it can be changed into a prime (1486721891) 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, 392787 + ... + 396553.

It is an arithmetic number, because the mean of its divisors is an integer number (85153032).

Almost surely, 2^1486721890 is an apocalyptic number.

1486721890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1486721890 is a deficient number, since it is larger than the sum of its proper divisors (1238175134).

1486721890 is a wasteful number, since it uses less digits than its factorization.

1486721890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 1486721890 is about 38558.0327558344. The cubic root of 1486721890 is about 1141.3265285644.

The spelling of 1486721890 in words is "one billion, four hundred eighty-six million, seven hundred twenty-one thousand, eight hundred ninety".