1696537440 has 384 divisors, whose sum is σ = 6774606720. Its totient is φ = 392822784.

The previous prime is 1696537433. The next prime is 1696537459. The reversal of 1696537440 is 447356961.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 953832 + ... + 955608.

It is an arithmetic number, because the mean of its divisors is an integer number (17642205).

Almost surely, 2^1696537440 is an apocalyptic number.

1696537440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1696537440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3387303360).

1696537440 is an abundant number, since it is smaller than the sum of its proper divisors (5078069280).

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

1696537440 is a wasteful number, since it uses less digits than its factorization.

1696537440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1696537440 is about 41189.0451455238. The cubic root of 1696537440 is about 1192.6723456456.

The spelling of 1696537440 in words is "one billion, six hundred ninety-six million, five hundred thirty-seven thousand, four hundred forty".