7849385040 has 80 divisors (see below), whose sum is σ = 27809255808. Its totient is φ = 1794144768.

The previous prime is 7849385029. The next prime is 7849385081. The reversal of 7849385040 is 405839487.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×7849385040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2334447 + ... + 2337806.

Almost surely, 2^7849385040 is an apocalyptic number.

7849385040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7849385040 is an abundant number, since it is smaller than the sum of its proper divisors (19959870768).

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

7849385040 is a wasteful number, since it uses less digits than its factorization.

7849385040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672276 (or 4672270 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 7849385040 is about 88596.7552453249. The cubic root of 7849385040 is about 1987.3691520993.

The spelling of 7849385040 in words is "seven billion, eight hundred forty-nine million, three hundred eighty-five thousand, forty".