145681934 has 4 divisors (see below), whose sum is σ = 218522904. Its totient is φ = 72840966.

The previous prime is 145681933. The next prime is 145681961. The reversal of 145681934 is 439186541.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 145681891 and 145681900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145681933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36420482 + ... + 36420485.

It is an arithmetic number, because the mean of its divisors is an integer number (54630726).

Almost surely, 2^145681934 is an apocalyptic number.

145681934 is a deficient number, since it is larger than the sum of its proper divisors (72840970).

145681934 is an equidigital number, since it uses as much as digits as its factorization.

145681934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72840969.

The product of its digits is 103680, while the sum is 41.

The square root of 145681934 is about 12069.8771327632. The cubic root of 145681934 is about 526.1810857564.

The spelling of 145681934 in words is "one hundred forty-five million, six hundred eighty-one thousand, nine hundred thirty-four".