1820201374 has 16 divisors (see below), whose sum is σ = 2769242112. Its totient is φ = 897200568.

The previous prime is 1820201353. The next prime is 1820201429. The reversal of 1820201374 is 4731020281.

It is a super-2 number, since 2×1820201374² = 6626266083822975752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26127 + ... + 65749.

It is an arithmetic number, because the mean of its divisors is an integer number (173077632).

Almost surely, 2^1820201374 is an apocalyptic number.

1820201374 is a deficient number, since it is larger than the sum of its proper divisors (949040738).

1820201374 is a wasteful number, since it uses less digits than its factorization.

1820201374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39951.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1820201374 is about 42663.8180898053. The cubic root of 1820201374 is about 1220.9741780104.

The spelling of 1820201374 in words is "one billion, eight hundred twenty million, two hundred one thousand, three hundred seventy-four".