190240388402 has 8 divisors (see below), whose sum is σ = 288185935212. Its totient is φ = 94178410000.

The previous prime is 190240388369. The next prime is 190240388407. The reversal of 190240388402 is 204883042091.

It can be written as a sum of positive squares in 2 ways, for example, as 189946917241 + 293471161 = 435829^2 + 17131^2 .

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

It is a super-2 number, since 2×190240388402² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 190240388402.

It is not an unprimeable number, because it can be changed into a prime (190240388407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470891849 + ... + 470892252.

Almost surely, 2^190240388402 is an apocalyptic number.

190240388402 is a deficient number, since it is larger than the sum of its proper divisors (97945546810).

190240388402 is a wasteful number, since it uses less digits than its factorization.

190240388402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941784204.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 190240388402 in words is "one hundred ninety billion, two hundred forty million, three hundred eighty-eight thousand, four hundred two".