16945738 has 4 divisors (see below), whose sum is σ = 25418610. Its totient is φ = 8472868.

The previous prime is 16945729. The next prime is 16945759. The reversal of 16945738 is 83754961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83754961 = 809 ⋅103529.

It can be written as a sum of positive squares in only one way, i.e., 16589329 + 356409 = 4073^2 + 597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16945694 and 16945703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236433 + ... + 4236436.

Almost surely, 2^16945738 is an apocalyptic number.

16945738 is a deficient number, since it is larger than the sum of its proper divisors (8472872).

16945738 is an equidigital number, since it uses as much as digits as its factorization.

16945738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472871.

The product of its digits is 181440, while the sum is 43.

The square root of 16945738 is about 4116.5201323448. The cubic root of 16945738 is about 256.8542931985.

The spelling of 16945738 in words is "sixteen million, nine hundred forty-five thousand, seven hundred thirty-eight".