1649367790 has 32 divisors (see below), whose sum is σ = 3402648000. Its totient is φ = 563887104.

The previous prime is 1649367787. The next prime is 1649367793. The reversal of 1649367790 is 977639461.

It is an interprime number because it is at equal distance from previous prime (1649367787) and next prime (1649367793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649367793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8665 + ... + 58084.

It is an arithmetic number, because the mean of its divisors is an integer number (106332750).

Almost surely, 2^1649367790 is an apocalyptic number.

1649367790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1649367790 is an abundant number, since it is smaller than the sum of its proper divisors (1753280210).

1649367790 is a wasteful number, since it uses less digits than its factorization.

1649367790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67116.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 1649367790 is about 40612.4093104558. The cubic root of 1649367790 is about 1181.5148097931.

The spelling of 1649367790 in words is "one billion, six hundred forty-nine million, three hundred sixty-seven thousand, seven hundred ninety".