1020681337 has 8 divisors (see below), whose sum is σ = 1099469504. Its totient is φ = 941932368.

The previous prime is 1020681323. The next prime is 1020681353. The reversal of 1020681337 is 7331860201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1020681337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020681299 and 1020681308.

It is not an unprimeable number, because it can be changed into a prime (1020681307) 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, 66118 + ... + 80080.

It is an arithmetic number, because the mean of its divisors is an integer number (137433688).

Almost surely, 2^1020681337 is an apocalyptic number.

It is an amenable number.

1020681337 is a deficient number, since it is larger than the sum of its proper divisors (78788167).

1020681337 is a wasteful number, since it uses less digits than its factorization.

1020681337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19599.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1020681337 is about 31948.1038091465. The cubic root of 1020681337 is about 1006.8467934304.

The spelling of 1020681337 in words is "one billion, twenty million, six hundred eighty-one thousand, three hundred thirty-seven".