145193970 has 32 divisors (see below), whose sum is σ = 351019008. Its totient is φ = 38434688.

The previous prime is 145193959. The next prime is 145193989. The reversal of 145193970 is 79391541.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13554 + ... + 21773.

It is an arithmetic number, because the mean of its divisors is an integer number (10969344).

Almost surely, 2^145193970 is an apocalyptic number.

145193970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145193970 is an abundant number, since it is smaller than the sum of its proper divisors (205825038).

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

145193970 is a wasteful number, since it uses less digits than its factorization.

145193970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35474.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 145193970 is about 12049.6460528930. The cubic root of 145193970 is about 525.5929445779.

The spelling of 145193970 in words is "one hundred forty-five million, one hundred ninety-three thousand, nine hundred seventy".