1997960460 has 24 divisors (see below), whose sum is σ = 5594289456. Its totient is φ = 532789440.

The previous prime is 1997960449. The next prime is 1997960467. The reversal of 1997960460 is 640697991.

It is not an unprimeable number, because it can be changed into a prime (1997960467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16649611 + ... + 16649730.

It is an arithmetic number, because the mean of its divisors is an integer number (233095394).

Almost surely, 2^1997960460 is an apocalyptic number.

1997960460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1997960460 is an abundant number, since it is smaller than the sum of its proper divisors (3596328996).

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

1997960460 is a wasteful number, since it uses less digits than its factorization.

1997960460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33299353 (or 33299351 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 1997960460 is about 44698.5509832254. The cubic root of 1997960460 is about 1259.4926276681.

The spelling of 1997960460 in words is "one billion, nine hundred ninety-seven million, nine hundred sixty thousand, four hundred sixty".