201949355444 has 6 divisors (see below), whose sum is σ = 353411372034. Its totient is φ = 100974677720.

The previous prime is 201949355369. The next prime is 201949355513. The reversal of 201949355444 is 444553949102.

It can be written as a sum of positive squares in only one way, i.e., 199977107344 + 1972248100 = 447188^2 + 44410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201949355392 and 201949355401.

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, 25243669427 + ... + 25243669434.

It is an arithmetic number, because the mean of its divisors is an integer number (58901895339).

Almost surely, 2^201949355444 is an apocalyptic number.

It is an amenable number.

201949355444 is a deficient number, since it is larger than the sum of its proper divisors (151462016590).

201949355444 is a wasteful number, since it uses less digits than its factorization.

201949355444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50487338865 (or 50487338863 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 201949355444 in words is "two hundred one billion, nine hundred forty-nine million, three hundred fifty-five thousand, four hundred forty-four".