1954840630 has 16 divisors (see below), whose sum is σ = 3600544464. Its totient is φ = 763751520.

The previous prime is 1954840627. The next prime is 1954840637. The reversal of 1954840630 is 360484591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954840637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2272641 + ... + 2273500.

It is an arithmetic number, because the mean of its divisors is an integer number (225034029).

Almost surely, 2^1954840630 is an apocalyptic number.

1954840630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1954840630 is a deficient number, since it is larger than the sum of its proper divisors (1645703834).

1954840630 is a wasteful number, since it uses less digits than its factorization.

1954840630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546191.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1954840630 is about 44213.5797012637. The cubic root of 1954840630 is about 1250.3658939535.

The spelling of 1954840630 in words is "one billion, nine hundred fifty-four million, eight hundred forty thousand, six hundred thirty".