145785748 has 6 divisors (see below), whose sum is σ = 255125066. Its totient is φ = 72892872.

The previous prime is 145785743. The next prime is 145785749. The reversal of 145785748 is 847587541.

It can be written as a sum of positive squares in only one way, i.e., 122146704 + 23639044 = 11052^2 + 4862^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145785743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18223215 + ... + 18223222.

Almost surely, 2^145785748 is an apocalyptic number.

It is an amenable number.

145785748 is a deficient number, since it is larger than the sum of its proper divisors (109339318).

145785748 is a wasteful number, since it uses less digits than its factorization.

145785748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36446441 (or 36446439 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 49.

The square root of 145785748 is about 12074.1769077648. The cubic root of 145785748 is about 526.3060428953.

The spelling of 145785748 in words is "one hundred forty-five million, seven hundred eighty-five thousand, seven hundred forty-eight".