2134943538 has 128 divisors (see below), whose sum is σ = 5601415680. Its totient is φ = 529551360.

The previous prime is 2134943537. The next prime is 2134943539. The reversal of 2134943538 is 8353494312.

It is an interprime number because it is at equal distance from previous prime (2134943537) and next prime (2134943539).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2134943538.

It is not an unprimeable number, because it can be changed into a prime (2134943537) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1567978 + ... + 1569338.

It is an arithmetic number, because the mean of its divisors is an integer number (43761060).

Almost surely, 2^2134943538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2134943538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800707840).

2134943538 is an abundant number, since it is smaller than the sum of its proper divisors (3466472142).

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

2134943538 is a wasteful number, since it uses less digits than its factorization.

2134943538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 1403 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 2134943538 is about 46205.4492240904. The cubic root of 2134943538 is about 1287.6429804198.

The spelling of 2134943538 in words is "two billion, one hundred thirty-four million, nine hundred forty-three thousand, five hundred thirty-eight".