3154021540 has 12 divisors (see below), whose sum is σ = 6623445276. Its totient is φ = 1261608608.

The previous prime is 3154021537. The next prime is 3154021547. The reversal of 3154021540 is 451204513.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 438986304 + 2715035236 = 20952^2 + 52106^2 .

It is not an unprimeable number, because it can be changed into a prime (3154021547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78850519 + ... + 78850558.

It is an arithmetic number, because the mean of its divisors is an integer number (551953773).

Almost surely, 2^3154021540 is an apocalyptic number.

It is an amenable number.

3154021540 is an abundant number, since it is smaller than the sum of its proper divisors (3469423736).

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

3154021540 is a wasteful number, since it uses less digits than its factorization.

3154021540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157701086 (or 157701084 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3154021540 is about 56160.6760999189. The cubic root of 3154021540 is about 1466.5207704967.

The spelling of 3154021540 in words is "three billion, one hundred fifty-four million, twenty-one thousand, five hundred forty".