1951967942730 has 384 divisors, whose sum is σ = 6160600074240. Its totient is φ = 437627473920.

The previous prime is 1951967942723. The next prime is 1951967942779. The reversal of 1951967942730 is 372497691591.

1951967942730 is a `hidden beast` number, since 1 + 9 + 51 + 96 + 79 + 427 + 3 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 24006424 + ... + 24087596.

It is an arithmetic number, because the mean of its divisors is an integer number (16043229360).

Almost surely, 2^{1951967942730} is an apocalyptic number.

1951967942730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1951967942730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3080300037120).

1951967942730 is an abundant number, since it is smaller than the sum of its proper divisors (4208632131510).

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

1951967942730 is a wasteful number, since it uses less digits than its factorization.

1951967942730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81263 (or 81244 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 1951967942730 in words is "one trillion, nine hundred fifty-one billion, nine hundred sixty-seven million, nine hundred forty-two thousand, seven hundred thirty".