1850428149 has 8 divisors (see below), whose sum is σ = 2467709760. Its totient is φ = 1233382656.

The previous prime is 1850428123. The next prime is 1850428157. The reversal of 1850428149 is 9418240581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1850428149 - 2⁸ = 1850427893 is a prime.

It is a super-2 number, since 2×1850428149² = 6848168669223132402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1850428149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850428109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39852 + ... + 72725.

It is an arithmetic number, because the mean of its divisors is an integer number (308463720).

Almost surely, 2^1850428149 is an apocalyptic number.

It is an amenable number.

1850428149 is a deficient number, since it is larger than the sum of its proper divisors (617281611).

1850428149 is a wasteful number, since it uses less digits than its factorization.

1850428149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118059.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 1850428149 is about 43016.6031783078. The cubic root of 1850428149 is about 1227.6957208967.

The spelling of 1850428149 in words is "one billion, eight hundred fifty million, four hundred twenty-eight thousand, one hundred forty-nine".