145315898 has 64 divisors (see below), whose sum is σ = 288707328. Its totient is φ = 53222400.

The previous prime is 145315889. The next prime is 145315901. The reversal of 145315898 is 898513541.

145315898 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145315898² = 42233420423092808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206948 + ... + 207648.

It is an arithmetic number, because the mean of its divisors is an integer number (4511052).

Almost surely, 2^145315898 is an apocalyptic number.

145315898 is a deficient number, since it is larger than the sum of its proper divisors (143391430).

145315898 is a wasteful number, since it uses less digits than its factorization.

145315898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its digits is 172800, while the sum is 44.

The square root of 145315898 is about 12054.7043928916. The cubic root of 145315898 is about 525.7400272848.

The spelling of 145315898 in words is "one hundred forty-five million, three hundred fifteen thousand, eight hundred ninety-eight".