145991650 has 24 divisors (see below), whose sum is σ = 310337280. Its totient is φ = 50054160.

The previous prime is 145991647. The next prime is 145991653. The reversal of 145991650 is 56199541.

It is an interprime number because it is at equal distance from previous prime (145991647) and next prime (145991653).

It is not an unprimeable number, because it can be changed into a prime (145991653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208210 + ... + 208909.

It is an arithmetic number, because the mean of its divisors is an integer number (12930720).

Almost surely, 2^145991650 is an apocalyptic number.

145991650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145991650 is an abundant number, since it is smaller than the sum of its proper divisors (164345630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145991650 is a wasteful number, since it uses less digits than its factorization.

145991650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417138 (or 417133 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 145991650 is about 12082.7004431956. The cubic root of 145991650 is about 526.5537042530.

It can be divided in two parts, 145991 and 650, that added together give a palindrome (146641).

The spelling of 145991650 in words is "one hundred forty-five million, nine hundred ninety-one thousand, six hundred fifty".