149644219490 has 32 divisors (see below), whose sum is σ = 269776986480. Its totient is φ = 59765013504.

The previous prime is 149644219489. The next prime is 149644219493. The reversal of 149644219490 is 94912446941.

It can be written as a sum of positive squares in 8 ways, for example, as 6633939601 + 143010279889 = 81449^2 + 378167^2 .

It is not an unprimeable number, because it can be changed into a prime (149644219493) 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, 21820142 + ... + 21826998.

Almost surely, 2^149644219490 is an apocalyptic number.

149644219490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149644219490 is a deficient number, since it is larger than the sum of its proper divisors (120132766990).

149644219490 is a wasteful number, since it uses less digits than its factorization.

149644219490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9926.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 149644219490 in words is "one hundred forty-nine billion, six hundred forty-four million, two hundred nineteen thousand, four hundred ninety".