1954781802 has 64 divisors (see below), whose sum is σ = 4424112000. Its totient is φ = 639684864.

The previous prime is 1954781761. The next prime is 1954781831. The reversal of 1954781802 is 2081874591.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663649 + ... + 666587.

It is an arithmetic number, because the mean of its divisors is an integer number (69126750).

Almost surely, 2^1954781802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1954781802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212056000).

1954781802 is an abundant number, since it is smaller than the sum of its proper divisors (2469330198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1954781802 is a wasteful number, since it uses less digits than its factorization.

1954781802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1954781802 is about 44212.9144255386. The cubic root of 1954781802 is about 1250.3533511983.

The spelling of 1954781802 in words is "one billion, nine hundred fifty-four million, seven hundred eighty-one thousand, eight hundred two".