145380538944 has 63 divisors (see below), whose sum is σ = 416733296707. Its totient is φ = 48457129344.

The previous prime is 145380538939. The next prime is 145380538949. The reversal of 145380538944 is 449835083541.

It is a happy number.

The square root of 145380538944 is 381288.

It is a perfect power (a square), and thus also a powerful number.

145380538944 is a `hidden beast` number, since 14 + 5 + 3 + 8 + 0 + 538 + 94 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (145380538939) and next prime (145380538949).

It is a super-2 number, since 2×145380538944² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145380538949) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9142969 + ... + 9158855.

Almost surely, 2^145380538944 is an apocalyptic number.

145380538944 is the 381288-th square number.

It is an amenable number.

145380538944 is an abundant number, since it is smaller than the sum of its proper divisors (271352757763).

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

145380538944 is an frugal number, since it uses more digits than its factorization.

145380538944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31792 (or 15892 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 145380538944 in words is "one hundred forty-five billion, three hundred eighty million, five hundred thirty-eight thousand, nine hundred forty-four".