1971500034 has 32 divisors (see below), whose sum is σ = 4611087360. Its totient is φ = 550185552.

The previous prime is 1971500033. The next prime is 1971500051. The reversal of 1971500034 is 4300051791.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1971499974 and 1971500010.

It is not an unprimeable number, because it can be changed into a prime (1971500033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544014 + ... + 547625.

It is an arithmetic number, because the mean of its divisors is an integer number (144096480).

Almost surely, 2^1971500034 is an apocalyptic number.

1971500034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1971500034 is an abundant number, since it is smaller than the sum of its proper divisors (2639587326).

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

1971500034 is a wasteful number, since it uses less digits than its factorization.

1971500034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091694.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1971500034 is about 44401.5769314559. The cubic root of 1971500034 is about 1253.9077779400.

The spelling of 1971500034 in words is "one billion, nine hundred seventy-one million, five hundred thousand, thirty-four".