146191490 has 32 divisors (see below), whose sum is σ = 270593136. Its totient is φ = 56842240.

The previous prime is 146191481. The next prime is 146191501. The reversal of 146191490 is 94191641.

It can be written as a sum of positive squares in 8 ways, for example, as 10259209 + 135932281 = 3203^2 + 11659^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 146191490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58670 + ... + 61110.

Almost surely, 2^146191490 is an apocalyptic number.

146191490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

146191490 is a deficient number, since it is larger than the sum of its proper divisors (124401646).

146191490 is a wasteful number, since it uses less digits than its factorization.

146191490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 146191490 is about 12090.9672896754. The cubic root of 146191490 is about 526.7938515852.

The spelling of 146191490 in words is "one hundred forty-six million, one hundred ninety-one thousand, four hundred ninety".