199649545 has 16 divisors (see below), whose sum is σ = 251102592. Its totient is φ = 152099200.

The previous prime is 199649533. The next prime is 199649603. The reversal of 199649545 is 545946991.

It is a happy number.

199649545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199649545 - 2⁹ = 199649033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199649492 and 199649501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23070 + ... + 30520.

It is an arithmetic number, because the mean of its divisors is an integer number (15693912).

Almost surely, 2^199649545 is an apocalyptic number.

It is an amenable number.

199649545 is a deficient number, since it is larger than the sum of its proper divisors (51453047).

199649545 is a wasteful number, since it uses less digits than its factorization.

199649545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712.

The product of its digits is 1749600, while the sum is 52.

The square root of 199649545 is about 14129.7397357489. The cubic root of 199649545 is about 584.4617690559.

The spelling of 199649545 in words is "one hundred ninety-nine million, six hundred forty-nine thousand, five hundred forty-five".