190401550 has 12 divisors (see below), whose sum is σ = 354146976. Its totient is φ = 76160600.

The previous prime is 190401539. The next prime is 190401553. The reversal of 190401550 is 55104091.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190401553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1903966 + ... + 1904065.

It is an arithmetic number, because the mean of its divisors is an integer number (29512248).

Almost surely, 2^190401550 is an apocalyptic number.

190401550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190401550 is a deficient number, since it is larger than the sum of its proper divisors (163745426).

190401550 is a wasteful number, since it uses less digits than its factorization.

190401550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808043 (or 3808038 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 190401550 is about 13798.6068137330. The cubic root of 190401550 is about 575.2944175914.

The spelling of 190401550 in words is "one hundred ninety million, four hundred one thousand, five hundred fifty".