145195903 has 2 divisors, whose sum is σ = 145195904. Its totient is φ = 145195902.

The previous prime is 145195871. The next prime is 145195913. The reversal of 145195903 is 309591541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145195903 - 2⁵ = 145195871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145195913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72597951 + 72597952.

It is an arithmetic number, because the mean of its divisors is an integer number (72597952).

Almost surely, 2^145195903 is an apocalyptic number.

145195903 is a deficient number, since it is larger than the sum of its proper divisors (1).

145195903 is an equidigital number, since it uses as much as digits as its factorization.

145195903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 145195903 is about 12049.7262624509. The cubic root of 145195903 is about 525.5952770133.

The spelling of 145195903 in words is "one hundred forty-five million, one hundred ninety-five thousand, nine hundred three".