140753638 has 4 divisors (see below), whose sum is σ = 211130460. Its totient is φ = 70376818.

The previous prime is 140753623. The next prime is 140753647. The reversal of 140753638 is 836357041.

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

It is a super-2 number, since 2×140753638² = 39623173220470088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140753597 and 140753606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35188408 + ... + 35188411.

It is an arithmetic number, because the mean of its divisors is an integer number (52782615).

Almost surely, 2^140753638 is an apocalyptic number.

140753638 is a deficient number, since it is larger than the sum of its proper divisors (70376822).

140753638 is an equidigital number, since it uses as much as digits as its factorization.

140753638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70376821.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 140753638 is about 11863.9638401337. The cubic root of 140753638 is about 520.1794720738.

The spelling of 140753638 in words is "one hundred forty million, seven hundred fifty-three thousand, six hundred thirty-eight".