1018749446 has 32 divisors (see below), whose sum is σ = 1900892448. Its totient is φ = 402301440.

The previous prime is 1018749443. The next prime is 1018749481. The reversal of 1018749446 is 6449478101.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1018749397 and 1018749406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018749443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99905 + ... + 109628.

It is an arithmetic number, because the mean of its divisors is an integer number (59402889).

Almost surely, 2^1018749446 is an apocalyptic number.

1018749446 is a deficient number, since it is larger than the sum of its proper divisors (882143002).

1018749446 is a wasteful number, since it uses less digits than its factorization.

1018749446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209576.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1018749446 is about 31917.8546584823. The cubic root of 1018749446 is about 1006.2111569899.

The spelling of 1018749446 in words is "one billion, eighteen million, seven hundred forty-nine thousand, four hundred forty-six".