1997792046 has 32 divisors (see below), whose sum is σ = 4441190400. Its totient is φ = 665682840.

The previous prime is 1997792033. The next prime is 1997792101. The reversal of 1997792046 is 6402977991.

It is a super-2 number, since 2×1997792046² = 7982346118121732232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1997791983 and 1997792001.

It is a congruent number.

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, 192531 + ... + 202641.

It is an arithmetic number, because the mean of its divisors is an integer number (138787200).

Almost surely, 2^1997792046 is an apocalyptic number.

1997792046 is an abundant number, since it is smaller than the sum of its proper divisors (2443398354).

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

1997792046 is a wasteful number, since it uses less digits than its factorization.

1997792046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13781 (or 13775 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 1997792046 is about 44696.6670569518. The cubic root of 1997792046 is about 1259.4572378867.

The spelling of 1997792046 in words is "one billion, nine hundred ninety-seven million, seven hundred ninety-two thousand, forty-six".