1649179370 has 8 divisors (see below), whose sum is σ = 2968522884. Its totient is φ = 659671744.

The previous prime is 1649179369. The next prime is 1649179397. The reversal of 1649179370 is 739719461.

It can be written as a sum of positive squares in 2 ways, for example, as 1648116409 + 1062961 = 40597^2 + 1031^2 .

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

It is a super-4 number, since 4×1649179370⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82458959 + ... + 82458978.

Almost surely, 2^1649179370 is an apocalyptic number.

1649179370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1649179370 is a deficient number, since it is larger than the sum of its proper divisors (1319343514).

1649179370 is a wasteful number, since it uses less digits than its factorization.

1649179370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164917944.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 1649179370 is about 40610.0895098743. The cubic root of 1649179370 is about 1181.4698168975.

The spelling of 1649179370 in words is "one billion, six hundred forty-nine million, one hundred seventy-nine thousand, three hundred seventy".