145145941898 has 48 divisors (see below), whose sum is σ = 235238873856. Its totient is φ = 67092442560.

The previous prime is 145145941883. The next prime is 145145941901. The reversal of 145145941898 is 898149541541.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30729365 + ... + 30734087.

It is an arithmetic number, because the mean of its divisors is an integer number (4900809872).

Almost surely, 2^145145941898 is an apocalyptic number.

145145941898 is a deficient number, since it is larger than the sum of its proper divisors (90092931958).

145145941898 is a wasteful number, since it uses less digits than its factorization.

145145941898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739 (or 5716 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 59.

The spelling of 145145941898 in words is "one hundred forty-five billion, one hundred forty-five million, nine hundred forty-one thousand, eight hundred ninety-eight".