1690834656 has 48 divisors (see below), whose sum is σ = 5072505984. Its totient is φ = 483095424.

The previous prime is 1690834619. The next prime is 1690834657. The reversal of 1690834656 is 6564380961.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690834657) 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, 1257390 + ... + 1258733.

It is an arithmetic number, because the mean of its divisors is an integer number (105677208).

Almost surely, 2^1690834656 is an apocalyptic number.

1690834656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1690834656 is an abundant number, since it is smaller than the sum of its proper divisors (3381671328).

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

1690834656 is a wasteful number, since it uses less digits than its factorization.

1690834656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516143 (or 2516135 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 1690834656 is about 41119.7599214781. The cubic root of 1690834656 is about 1191.3344857898.

The spelling of 1690834656 in words is "one billion, six hundred ninety million, eight hundred thirty-four thousand, six hundred fifty-six".