1954649906 has 8 divisors (see below), whose sum is σ = 3198518064. Its totient is φ = 888477220.

The previous prime is 1954649819. The next prime is 1954649929. The reversal of 1954649906 is 6099464591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44423840 + ... + 44423883.

It is an arithmetic number, because the mean of its divisors is an integer number (399814758).

Almost surely, 2^1954649906 is an apocalyptic number.

1954649906 is a deficient number, since it is larger than the sum of its proper divisors (1243868158).

1954649906 is a wasteful number, since it uses less digits than its factorization.

1954649906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88847736.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 1954649906 is about 44211.4227999959. The cubic root of 1954649906 is about 1250.3252286537.

The spelling of 1954649906 in words is "one billion, nine hundred fifty-four million, six hundred forty-nine thousand, nine hundred six".