145038815 has 16 divisors (see below), whose sum is σ = 187414560. Its totient is φ = 107351040.

The previous prime is 145038811. The next prime is 145038833. The reversal of 145038815 is 518830541.

It is not a de Polignac number, because 145038815 - 2² = 145038811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145038811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9446 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (11713410).

Almost surely, 2^145038815 is an apocalyptic number.

145038815 is a deficient number, since it is larger than the sum of its proper divisors (42375745).

145038815 is a wasteful number, since it uses less digits than its factorization.

145038815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29002.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 145038815 is about 12043.2061760978. The cubic root of 145038815 is about 525.4056607712.

The spelling of 145038815 in words is "one hundred forty-five million, thirty-eight thousand, eight hundred fifteen".