2149650740 has 12 divisors (see below), whose sum is σ = 4514266596. Its totient is φ = 859860288.

The previous prime is 2149650739. The next prime is 2149650743. The reversal of 2149650740 is 470569412.

It can be written as a sum of positive squares in 2 ways, for example, as 1399657744 + 749992996 = 37412^2 + 27386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2149650694 and 2149650703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149650743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53741249 + ... + 53741288.

It is an arithmetic number, because the mean of its divisors is an integer number (376188883).

Almost surely, 2^2149650740 is an apocalyptic number.

2149650740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149650740 is an abundant number, since it is smaller than the sum of its proper divisors (2364615856).

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

2149650740 is a wasteful number, since it uses less digits than its factorization.

2149650740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107482546 (or 107482544 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2149650740 is about 46364.3261570790. The cubic root of 2149650740 is about 1290.5929889951.

The spelling of 2149650740 in words is "two billion, one hundred forty-nine million, six hundred fifty thousand, seven hundred forty".