1951345740 has 48 divisors (see below), whose sum is σ = 5470966368. Its totient is φ = 519673344.

The previous prime is 1951345723. The next prime is 1951345751. The reversal of 1951345740 is 475431591.

It is a super-2 number, since 2×1951345740² = 7615500394032295200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25344 + ... + 67416.

It is an arithmetic number, because the mean of its divisors is an integer number (113978466).

Almost surely, 2^1951345740 is an apocalyptic number.

1951345740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1951345740 is an abundant number, since it is smaller than the sum of its proper divisors (3519620628).

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

1951345740 is a wasteful number, since it uses less digits than its factorization.

1951345740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42858 (or 42856 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1951345740 is about 44174.0392085668. The cubic root of 1951345740 is about 1249.6203092129.

The spelling of 1951345740 in words is "one billion, nine hundred fifty-one million, three hundred forty-five thousand, seven hundred forty".